87394777 has 16 divisors (see below), whose sum is σ = 94118400. Its totient is φ = 80982720.

The previous prime is 87394771. The next prime is 87394789. The reversal of 87394777 is 77749378.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87394777 is a prime.

It is a Duffinian number.

Its product of digits (2074464) is a multiple of the sum of its prime divisors (1176).

It is not an unprimeable number, because it can be changed into a prime (87394771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84252 + ... + 85282.

It is an arithmetic number, because the mean of its divisors is an integer number (5882400).

Almost surely, 2^87394777 is an apocalyptic number.

It is an amenable number.

87394777 is a deficient number, since it is larger than the sum of its proper divisors (6723623).

87394777 is a wasteful number, since it uses less digits than its factorization.

87394777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176.

The product of its digits is 2074464, while the sum is 52.

The square root of 87394777 is about 9348.5173690805. The cubic root of 87394777 is about 443.7739715411.

The spelling of 87394777 in words is "eighty-seven million, three hundred ninety-four thousand, seven hundred seventy-seven".