87944977 has 8 divisors (see below), whose sum is σ = 92923200. Its totient is φ = 83001744.

The previous prime is 87944971. The next prime is 87944999. The reversal of 87944977 is 77944978.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87944977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87944971) 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, 3493 + ... + 13714.

It is an arithmetic number, because the mean of its divisors is an integer number (11615400).

Almost surely, 2^87944977 is an apocalyptic number.

It is an amenable number.

87944977 is a deficient number, since it is larger than the sum of its proper divisors (4978223).

87944977 is a wasteful number, since it uses less digits than its factorization.

87944977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17495.

The product of its digits is 3556224, while the sum is 55.

The square root of 87944977 is about 9377.8983253179. The cubic root of 87944977 is about 444.7032941973.

Subtracting from 87944977 its reverse (77944978), we obtain a palindrome (9999999).

The spelling of 87944977 in words is "eighty-seven million, nine hundred forty-four thousand, nine hundred seventy-seven".