87399000 has 320 divisors, whose sum is σ = 332972640. Its totient is φ = 21254400.

The previous prime is 87398977. The next prime is 87399049. The reversal of 87399000 is 99378.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1052959 + ... + 1053041.

Almost surely, 2^87399000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87399000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166486320).

87399000 is an abundant number, since it is smaller than the sum of its proper divisors (245573640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87399000 is a wasteful number, since it uses less digits than its factorization.

87399000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 87399000 is about 9348.7432310445. The cubic root of 87399000 is about 443.7811192882.

The spelling of 87399000 in words is "eighty-seven million, three hundred ninety-nine thousand".