Search a number
-
+
115868969 = 863134263
BaseRepresentation
bin1101110100000…
…00010100101001
322002000202100022
412322000110221
5214130301334
615255250225
72604604256
oct672002451
9262022308
10115868969
115a450087
1232979975
131b00b828
141156242d
15a28b82e
hex6e80529

115868969 has 4 divisors (see below), whose sum is σ = 116004096. Its totient is φ = 115733844.

The previous prime is 115868939. The next prime is 115868981. The reversal of 115868969 is 969868511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115868969 - 216 = 115803433 is a prime.

It is a super-2 number, since 2×1158689692 = 26851235954245922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 115868969.

It is not an unprimeable number, because it can be changed into a prime (115868939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66269 + ... + 67994.

It is an arithmetic number, because the mean of its divisors is an integer number (29001024).

Almost surely, 2115868969 is an apocalyptic number.

It is an amenable number.

115868969 is a deficient number, since it is larger than the sum of its proper divisors (135127).

115868969 is an equidigital number, since it uses as much as digits as its factorization.

115868969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135126.

The product of its digits is 933120, while the sum is 53.

The square root of 115868969 is about 10764.2449340397. The cubic root of 115868969 is about 487.5161952980.

The spelling of 115868969 in words is "one hundred fifteen million, eight hundred sixty-eight thousand, nine hundred sixty-nine".

Divisors: 1 863 134263 115868969