999802404 has 36 divisors (see below), whose sum is σ = 2562880320. Its totient is φ = 328572720.

The previous prime is 999802403. The next prime is 999802409. The reversal of 999802404 is 404208999.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 999802404.

It is not an unprimeable number, because it can be changed into a prime (999802403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 193024 + ... + 198135.

It is an arithmetic number, because the mean of its divisors is an integer number (71191120).

Almost surely, 2^999802404 is an apocalyptic number.

It is an amenable number.

999802404 is an abundant number, since it is smaller than the sum of its proper divisors (1563077916).

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

999802404 is a wasteful number, since it uses less digits than its factorization.

999802404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391240 (or 391235 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 999802404 is about 31619.6521802502. The cubic root of 999802404 is about 999.9341303279.

The spelling of 999802404 in words is "nine hundred ninety-nine million, eight hundred two thousand, four hundred four".