998920450 has 96 divisors (see below), whose sum is σ = 2100722688. Its totient is φ = 350208000.

The previous prime is 998920441. The next prime is 998920451. The reversal of 998920450 is 54029899.

It is a self number, because there is not a number n which added to its sum of digits gives 998920450.

It is not an unprimeable number, because it can be changed into a prime (998920451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3886722 + ... + 3886978.

It is an arithmetic number, because the mean of its divisors is an integer number (21882528).

Almost surely, 2^998920450 is an apocalyptic number.

998920450 is an abundant number, since it is smaller than the sum of its proper divisors (1101802238).

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

998920450 is a wasteful number, since it uses less digits than its factorization.

998920450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508 (or 503 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 998920450 is about 31605.7028081959. The cubic root of 998920450 is about 999.6400204303.

The spelling of 998920450 in words is "nine hundred ninety-eight million, nine hundred twenty thousand, four hundred fifty".