99904438 has 16 divisors (see below), whose sum is σ = 152324640. Its totient is φ = 49136256.

The previous prime is 99904411. The next prime is 99904439. The reversal of 99904438 is 83440999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99904439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30798 + ... + 33886.

It is an arithmetic number, because the mean of its divisors is an integer number (9520290).

Almost surely, 2^99904438 is an apocalyptic number.

99904438 is a deficient number, since it is larger than the sum of its proper divisors (52420202).

99904438 is a wasteful number, since it uses less digits than its factorization.

99904438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3351.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 99904438 is about 9995.2207579423. The cubic root of 99904438 is about 464.0109830684.

The spelling of 99904438 in words is "ninety-nine million, nine hundred four thousand, four hundred thirty-eight".