118790987 has 4 divisors (see below), whose sum is σ = 135761136. Its totient is φ = 101820840.

The previous prime is 118790963. The next prime is 118790993. The reversal of 118790987 is 789097811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 118790987 - 2¹⁸ = 118528843 is a prime.

It is a super-2 number, since 2×118790987² = 28222597184868338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (118792987) 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, 8485064 + ... + 8485077.

It is an arithmetic number, because the mean of its divisors is an integer number (33940284).

Almost surely, 2^118790987 is an apocalyptic number.

118790987 is a deficient number, since it is larger than the sum of its proper divisors (16970149).

118790987 is an equidigital number, since it uses as much as digits as its factorization.

118790987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16970148.

The product of its (nonzero) digits is 254016, while the sum is 50.

The square root of 118790987 is about 10899.1278091414. The cubic root of 118790987 is about 491.5803301561.

The spelling of 118790987 in words is "one hundred eighteen million, seven hundred ninety thousand, nine hundred eighty-seven".