87044831 has 4 divisors (see below), whose sum is σ = 89397432. Its totient is φ = 84692232.

The previous prime is 87044827. The next prime is 87044843. The reversal of 87044831 is 13844078.

It is a happy number.

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 87044831 - 2² = 87044827 is a prime.

It is a super-2 number, since 2×87044831² = 15153605207637122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87044791 and 87044800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87044801) 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, 1176245 + ... + 1176318.

It is an arithmetic number, because the mean of its divisors is an integer number (22349358).

Almost surely, 2^87044831 is an apocalyptic number.

87044831 is a deficient number, since it is larger than the sum of its proper divisors (2352601).

87044831 is a wasteful number, since it uses less digits than its factorization.

87044831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2352600.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 87044831 is about 9329.7819374303. The cubic root of 87044831 is about 443.1808595581.

The spelling of 87044831 in words is "eighty-seven million, forty-four thousand, eight hundred thirty-one".