109290856 has 8 divisors (see below), whose sum is σ = 204920370. Its totient is φ = 54645424.

The previous prime is 109290851. The next prime is 109290889. The reversal of 109290856 is 658092901.

It can be written as a sum of positive squares in only one way, i.e., 108868356 + 422500 = 10434^2 + 650^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (109290851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6830671 + ... + 6830686.

Almost surely, 2^109290856 is an apocalyptic number.

It is an amenable number.

109290856 is a deficient number, since it is larger than the sum of its proper divisors (95629514).

109290856 is a wasteful number, since it uses less digits than its factorization.

109290856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13661363 (or 13661359 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 109290856 is about 10454.2267050222. The cubic root of 109290856 is about 478.1101267591.

The spelling of 109290856 in words is "one hundred nine million, two hundred ninety thousand, eight hundred fifty-six".