87898291 has 4 divisors (see below), whose sum is σ = 94659712. Its totient is φ = 81136872.

The previous prime is 87898289. The next prime is 87898297. The reversal of 87898291 is 19289878.

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 87898291 - 2¹ = 87898289 is a prime.

It is a super-2 number, since 2×87898291² = 15452219121441362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87898297) 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, 3380691 + ... + 3380716.

It is an arithmetic number, because the mean of its divisors is an integer number (23664928).

Almost surely, 2^87898291 is an apocalyptic number.

87898291 is a deficient number, since it is larger than the sum of its proper divisors (6761421).

87898291 is a wasteful number, since it uses less digits than its factorization.

87898291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6761420.

The product of its digits is 580608, while the sum is 52.

The square root of 87898291 is about 9375.4088444185. The cubic root of 87898291 is about 444.6245893315.

The spelling of 87898291 in words is "eighty-seven million, eight hundred ninety-eight thousand, two hundred ninety-one".