998400004 has 24 divisors (see below), whose sum is σ = 2114259840. Its totient is φ = 402715776.

The previous prime is 998399999. The next prime is 998400019. The reversal of 998400004 is 400004899.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1048264 + ... + 1049215.

It is an arithmetic number, because the mean of its divisors is an integer number (88094160).

Almost surely, 2^998400004 is an apocalyptic number.

It is an amenable number.

998400004 is an abundant number, since it is smaller than the sum of its proper divisors (1115859836).

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

998400004 is a wasteful number, since it uses less digits than its factorization.

998400004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097507 (or 2097505 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 998400004 is about 31597.4683163066. The cubic root of 998400004 is about 999.4663833039.

The spelling of 998400004 in words is "nine hundred ninety-eight million, four hundred thousand, four".