99999814 has 16 divisors (see below), whose sum is σ = 165729888. Its totient is φ = 45012352.

The previous prime is 99999787. The next prime is 99999821. The reversal of 99999814 is 41899999.

It is a congruent number.

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, 63157 + ... + 64720.

It is an arithmetic number, because the mean of its divisors is an integer number (10358118).

Almost surely, 2^99999814 is an apocalyptic number.

99999814 is a deficient number, since it is larger than the sum of its proper divisors (65730074).

99999814 is a wasteful number, since it uses less digits than its factorization.

99999814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127919.

The product of its digits is 1889568, while the sum is 58.

The square root of 99999814 is about 9999.9906999957. The cubic root of 99999814 is about 464.1585955826.

The spelling of 99999814 in words is "ninety-nine million, nine hundred ninety-nine thousand, eight hundred fourteen".