998749554 has 32 divisors (see below), whose sum is σ = 2293781760. Its totient is φ = 286722000.

The previous prime is 998749553. The next prime is 998749559. The reversal of 998749554 is 455947899.

It is not an unprimeable number, because it can be changed into a prime (998749553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396972 + ... + 399479.

It is an arithmetic number, because the mean of its divisors is an integer number (71680680).

Almost surely, 2^998749554 is an apocalyptic number.

998749554 is an abundant number, since it is smaller than the sum of its proper divisors (1295032206).

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

998749554 is a wasteful number, since it uses less digits than its factorization.

998749554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796486.

The product of its digits is 16329600, while the sum is 60.

The square root of 998749554 is about 31602.9991298294. Note that the first 3 decimals coincide. The cubic root of 998749554 is about 999.5830108109.

The spelling of 998749554 in words is "nine hundred ninety-eight million, seven hundred forty-nine thousand, five hundred fifty-four".