998737090 has 128 divisors (see below), whose sum is σ = 2148249600. Its totient is φ = 330946560.

The previous prime is 998737067. The next prime is 998737093. The reversal of 998737090 is 90737899.

It is not an unprimeable number, because it can be changed into a prime (998737093) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5228895 + ... + 5229085.

It is an arithmetic number, because the mean of its divisors is an integer number (16783200).

Almost surely, 2^998737090 is an apocalyptic number.

998737090 is an abundant number, since it is smaller than the sum of its proper divisors (1149512510).

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

998737090 is a wasteful number, since it uses less digits than its factorization.

998737090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332.

The product of its (nonzero) digits is 857304, while the sum is 52.

The square root of 998737090 is about 31602.8019327401. The cubic root of 998737090 is about 999.5788526598.

The spelling of 998737090 in words is "nine hundred ninety-eight million, seven hundred thirty-seven thousand, ninety".