99993986 has 8 divisors (see below), whose sum is σ = 152103744. Its totient is φ = 49292740.

The previous prime is 99993947. The next prime is 99993991. The reversal of 99993986 is 68939999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351950 + ... + 352233.

It is an arithmetic number, because the mean of its divisors is an integer number (19012968).

Almost surely, 2^99993986 is an apocalyptic number.

99993986 is a deficient number, since it is larger than the sum of its proper divisors (52109758).

99993986 is a wasteful number, since it uses less digits than its factorization.

99993986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704256.

The product of its digits is 8503056, while the sum is 62.

The square root of 99993986 is about 9999.6992954788. The cubic root of 99993986 is about 464.1495783363.

The spelling of 99993986 in words is "ninety-nine million, nine hundred ninety-three thousand, nine hundred eighty-six".