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47764969 = 76823567
BaseRepresentation
bin1011011000110…
…1010111101001
310022212201012221
42312031113221
544211434334
64423434041
71116665320
oct266152751
9108781187
1047764969
1124a6458a
1213bb5921
139b84cc5
1464b50b7
1542d78b4
hex2d8d5e9

47764969 has 4 divisors (see below), whose sum is σ = 54588544. Its totient is φ = 40941396.

The previous prime is 47764967. The next prime is 47765009. The reversal of 47764969 is 96946774.

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 47764969 - 21 = 47764967 is a prime.

It is a super-2 number, since 2×477649692 = 4562984527141922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47764961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3411777 + ... + 3411790.

It is an arithmetic number, because the mean of its divisors is an integer number (13647136).

Almost surely, 247764969 is an apocalyptic number.

It is an amenable number.

47764969 is a deficient number, since it is larger than the sum of its proper divisors (6823575).

47764969 is an equidigital number, since it uses as much as digits as its factorization.

47764969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6823574.

The product of its digits is 2286144, while the sum is 52.

The square root of 47764969 is about 6911.2205144967. The cubic root of 47764969 is about 362.8299815738.

The spelling of 47764969 in words is "forty-seven million, seven hundred sixty-four thousand, nine hundred sixty-nine".

Divisors: 1 7 6823567 47764969