998920400 has 30 divisors (see below), whose sum is σ = 2399907222. Its totient is φ = 399568000.

The previous prime is 998920387. The next prime is 998920411. The reversal of 998920400 is 4029899.

It can be written as a sum of positive squares in 3 ways, for example, as 107584 + 998812816 = 328^2 + 31604^2 .

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, 1248251 + ... + 1249050.

Almost surely, 2^998920400 is an apocalyptic number.

It is an amenable number.

998920400 is an abundant number, since it is smaller than the sum of its proper divisors (1400986822).

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

998920400 is a wasteful number, since it uses less digits than its factorization.

998920400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497319 (or 2497308 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 998920400 is about 31605.7020171994. The cubic root of 998920400 is about 999.6400037516.

The spelling of 998920400 in words is "nine hundred ninety-eight million, nine hundred twenty thousand, four hundred".