99999404 has 24 divisors (see below), whose sum is σ = 177585408. Its totient is φ = 49266000.

The previous prime is 99999401. The next prime is 99999437. The reversal of 99999404 is 40499999.

It is not an unprimeable number, because it can be changed into a prime (99999401) 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, 102929 + ... + 103895.

It is an arithmetic number, because the mean of its divisors is an integer number (7399392).

Almost surely, 2^99999404 is an apocalyptic number.

It is an amenable number.

99999404 is a deficient number, since it is larger than the sum of its proper divisors (77586004).

99999404 is a wasteful number, since it uses less digits than its factorization.

99999404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325 (or 1323 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 53.

The square root of 99999404 is about 9999.9701999556. The cubic root of 99999404 is about 464.1579612305.

The spelling of 99999404 in words is "ninety-nine million, nine hundred ninety-nine thousand, four hundred four".