99986986 has 16 divisors (see below), whose sum is σ = 163840320. Its totient is φ = 45386080.

The previous prime is 99986969. The next prime is 99986989. The reversal of 99986986 is 68968999.

It is not an unprimeable number, because it can be changed into a prime (99986989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15750 + ... + 21166.

It is an arithmetic number, because the mean of its divisors is an integer number (10240020).

Almost surely, 2^99986986 is an apocalyptic number.

99986986 is a deficient number, since it is larger than the sum of its proper divisors (63853334).

99986986 is a wasteful number, since it uses less digits than its factorization.

99986986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6269.

The product of its digits is 15116544, while the sum is 64.

The square root of 99986986 is about 9999.3492788281. The cubic root of 99986986 is about 464.1387472754.

The spelling of 99986986 in words is "ninety-nine million, nine hundred eighty-six thousand, nine hundred eighty-six".