87755939 has 8 divisors (see below), whose sum is σ = 88355328. Its totient is φ = 87159240.

The previous prime is 87755933. The next prime is 87755959. The reversal of 87755939 is 93955778.

It is a happy number.

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 87755939 - 2⁴ = 87755923 is a prime.

It is a super-2 number, since 2×87755939² = 15402209659543442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87755933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178484 + ... + 178974.

It is an arithmetic number, because the mean of its divisors is an integer number (11044416).

Almost surely, 2^87755939 is an apocalyptic number.

87755939 is a deficient number, since it is larger than the sum of its proper divisors (599389).

87755939 is a wasteful number, since it uses less digits than its factorization.

87755939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345.

The product of its digits is 2381400, while the sum is 53.

The square root of 87755939 is about 9367.8139926025. The cubic root of 87755939 is about 444.3844352567.

The spelling of 87755939 in words is "eighty-seven million, seven hundred fifty-five thousand, nine hundred thirty-nine".