987421599 has 24 divisors (see below), whose sum is σ = 1464374912. Its totient is φ = 640800720.

The previous prime is 987421577. The next prime is 987421607. The reversal of 987421599 is 995124789.

987421599 is a `hidden beast` number, since 9 + 8 + 7 + 42 + 1 + 599 = 666.

It is not a de Polignac number, because 987421599 - 2⁸ = 987421343 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 (987421529) 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, 114654 + ... + 122964.

Almost surely, 2^987421599 is an apocalyptic number.

987421599 is a deficient number, since it is larger than the sum of its proper divisors (476953313).

987421599 is a wasteful number, since it uses less digits than its factorization.

987421599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8667 (or 8664 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The square root of 987421599 is about 31423.2652504478. The cubic root of 987421599 is about 995.7894962062.

The spelling of 987421599 in words is "nine hundred eighty-seven million, four hundred twenty-one thousand, five hundred ninety-nine".