87990404395 has 16 divisors (see below), whose sum is σ = 106266504960. Its totient is φ = 69940964704.

The previous prime is 87990404353. The next prime is 87990404417. The reversal of 87990404395 is 59340409978.

It is a cyclic number.

It is not a de Polignac number, because 87990404395 - 2²⁷ = 87856186667 is a prime.

It is a super-2 number, since 2×87990404395² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1054392 + ... + 1134778.

It is an arithmetic number, because the mean of its divisors is an integer number (6641656560).

Almost surely, 2^87990404395 is an apocalyptic number.

87990404395 is a deficient number, since it is larger than the sum of its proper divisors (18276100565).

87990404395 is a wasteful number, since it uses less digits than its factorization.

87990404395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81794.

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 87990404395 in words is "eighty-seven billion, nine hundred ninety million, four hundred four thousand, three hundred ninety-five".