87290199 has 24 divisors (see below), whose sum is σ = 133131440. Its totient is φ = 54960768.

The previous prime is 87290197. The next prime is 87290201. The reversal of 87290199 is 99109278.

It is an interprime number because it is at equal distance from previous prime (87290197) and next prime (87290201).

It is not a de Polignac number, because 87290199 - 2¹ = 87290197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87290191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77589 + ... + 78705.

Almost surely, 2^87290199 is an apocalyptic number.

87290199 is a deficient number, since it is larger than the sum of its proper divisors (45841241).

87290199 is a wasteful number, since it uses less digits than its factorization.

87290199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599 (or 1596 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 87290199 is about 9342.9224014759. The cubic root of 87290199 is about 443.5968918591.

The spelling of 87290199 in words is "eighty-seven million, two hundred ninety thousand, one hundred ninety-nine".