111997415 has 8 divisors (see below), whose sum is σ = 134479008. Its totient is φ = 89543200.

The previous prime is 111997397. The next prime is 111997421. The reversal of 111997415 is 514799111.

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

It is not a de Polignac number, because 111997415 - 2¹⁶ = 111931879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3614 + ... + 15396.

It is an arithmetic number, because the mean of its divisors is an integer number (16809876).

Almost surely, 2^111997415 is an apocalyptic number.

111997415 is a deficient number, since it is larger than the sum of its proper divisors (22481593).

111997415 is a wasteful number, since it uses less digits than its factorization.

111997415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13689.

The product of its digits is 11340, while the sum is 38.

The square root of 111997415 is about 10582.8831137833. The cubic root of 111997415 is about 482.0247443436.

The spelling of 111997415 in words is "one hundred eleven million, nine hundred ninety-seven thousand, four hundred fifteen".