99402804 has 18 divisors (see below), whose sum is σ = 251268290. Its totient is φ = 33134256.

The previous prime is 99402767. The next prime is 99402829. The reversal of 99402804 is 40820499.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 97061904 + 2340900 = 9852^2 + 1530^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2761189 = 99402804 / (9 + 9 + 4 + 0 + 2 + 8 + 0 + 4).

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 5 ways as a sum of consecutive naturals, for example, 1380559 + ... + 1380630.

Almost surely, 2^99402804 is an apocalyptic number.

It is an amenable number.

99402804 is an abundant number, since it is smaller than the sum of its proper divisors (151865486).

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

99402804 is a wasteful number, since it uses less digits than its factorization.

99402804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761199 (or 2761194 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 99402804 is about 9970.0954860021. The cubic root of 99402804 is about 463.2330584834.

The spelling of 99402804 in words is "ninety-nine million, four hundred two thousand, eight hundred four".