109957987 has 8 divisors (see below), whose sum is σ = 113296320. Its totient is φ = 106666560.

The previous prime is 109957973. The next prime is 109957999. The reversal of 109957987 is 789759901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 109957987 - 2¹⁵ = 109925219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109957907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6939 + ... + 16372.

It is an arithmetic number, because the mean of its divisors is an integer number (14162040).

Almost surely, 2^109957987 is an apocalyptic number.

109957987 is a deficient number, since it is larger than the sum of its proper divisors (3338333).

109957987 is an equidigital number, since it uses as much as digits as its factorization.

109957987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23453.

The product of its (nonzero) digits is 1428840, while the sum is 55.

The square root of 109957987 is about 10486.0853992326. The cubic root of 109957987 is about 479.0809773560.

The spelling of 109957987 in words is "one hundred nine million, nine hundred fifty-seven thousand, nine hundred eighty-seven".