109519857 has 28 divisors (see below), whose sum is σ = 172868880. Its totient is φ = 69161688.

The previous prime is 109519841. The next prime is 109519867. The reversal of 109519857 is 758915901.

It is not a de Polignac number, because 109519857 - 2⁴ = 109519841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109519867) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 9898 + ... + 17804.

Almost surely, 2^109519857 is an apocalyptic number.

It is an amenable number.

109519857 is a deficient number, since it is larger than the sum of its proper divisors (63349023).

109519857 is an frugal number, since it uses more digits than its factorization.

109519857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7944 (or 7929 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 45.

The square root of 109519857 is about 10465.1735293783. The cubic root of 109519857 is about 478.4438274878.

The spelling of 109519857 in words is "one hundred nine million, five hundred nineteen thousand, eight hundred fifty-seven".