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109895381 = 475123131
BaseRepresentation
bin1101000110011…
…01111011010101
321122210021010022
412203031323111
5211113123011
614523234525
72503044461
oct643157325
9248707108
10109895381
1157040032
1230978a45
13199c986b
14108494a1
1599ab8db
hex68cded5

109895381 has 4 divisors (see below), whose sum is σ = 109923264. Its totient is φ = 109867500.

The previous prime is 109895351. The next prime is 109895393. The reversal of 109895381 is 183598901.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 183598901 = 892062909.

It is a cyclic number.

It is not a de Polignac number, because 109895381 - 210 = 109894357 is a prime.

It is a super-2 number, since 2×1098953812 = 24153989530270322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109895351) 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, 6815 + ... + 16316.

It is an arithmetic number, because the mean of its divisors is an integer number (27480816).

Almost surely, 2109895381 is an apocalyptic number.

It is an amenable number.

109895381 is a deficient number, since it is larger than the sum of its proper divisors (27883).

109895381 is an equidigital number, since it uses as much as digits as its factorization.

109895381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27882.

The product of its (nonzero) digits is 77760, while the sum is 44.

The square root of 109895381 is about 10483.0997801223. The cubic root of 109895381 is about 478.9900364471.

The spelling of 109895381 in words is "one hundred nine million, eight hundred ninety-five thousand, three hundred eighty-one".

Divisors: 1 4751 23131 109895381