87290899 has 8 divisors (see below), whose sum is σ = 90567360. Its totient is φ = 84032256.

The previous prime is 87290873. The next prime is 87290909. The reversal of 87290899 is 99809278.

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

It is not a de Polignac number, because 87290899 - 2¹³ = 87282707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87290809) 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, 5974 + ... + 14500.

It is an arithmetic number, because the mean of its divisors is an integer number (11320920).

Almost surely, 2^87290899 is an apocalyptic number.

87290899 is a deficient number, since it is larger than the sum of its proper divisors (3276461).

87290899 is a wasteful number, since it uses less digits than its factorization.

87290899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8909.

The product of its (nonzero) digits is 653184, while the sum is 52.

The square root of 87290899 is about 9342.9598629128. The cubic root of 87290899 is about 443.5980776241.

The spelling of 87290899 in words is "eighty-seven million, two hundred ninety thousand, eight hundred ninety-nine".