99970986 has 16 divisors (see below), whose sum is σ = 200047968. Its totient is φ = 33306000.

The previous prime is 99970979. The next prime is 99970993. The reversal of 99970986 is 68907999.

It is an interprime number because it is at equal distance from previous prime (99970979) and next prime (99970993).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13336 + ... + 19436.

It is an arithmetic number, because the mean of its divisors is an integer number (12502998).

Almost surely, 2^99970986 is an apocalyptic number.

99970986 is an abundant number, since it is smaller than the sum of its proper divisors (100076982).

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

99970986 is a wasteful number, since it uses less digits than its factorization.

99970986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8837.

The product of its (nonzero) digits is 2204496, while the sum is 57.

The square root of 99970986 is about 9998.5491947582. The cubic root of 99970986 is about 464.1139886663.

The spelling of 99970986 in words is "ninety-nine million, nine hundred seventy thousand, nine hundred eighty-six".