99004640 has 48 divisors (see below), whose sum is σ = 267315552. Its totient is φ = 33944064.

The previous prime is 99004621. The next prime is 99004657. The reversal of 99004640 is 4640099.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 99004597 and 99004606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43079 + ... + 45318.

It is an arithmetic number, because the mean of its divisors is an integer number (5569074).

Almost surely, 2^99004640 is an apocalyptic number.

It is an amenable number.

99004640 is an abundant number, since it is smaller than the sum of its proper divisors (168310912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99004640 is a wasteful number, since it uses less digits than its factorization.

99004640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88419 (or 88411 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 99004640 is about 9950.1075371073. The cubic root of 99004640 is about 462.6137280584.

The spelling of 99004640 in words is "ninety-nine million, four thousand, six hundred forty".