998831490 has 16 divisors (see below), whose sum is σ = 2397195648. Its totient is φ = 266355056.

The previous prime is 998831467. The next prime is 998831551. The reversal of 998831490 is 94138899.

It is a happy number.

998831490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

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, 16647162 + ... + 16647221.

It is an arithmetic number, because the mean of its divisors is an integer number (149824728).

Almost surely, 2^998831490 is an apocalyptic number.

998831490 is an abundant number, since it is smaller than the sum of its proper divisors (1398364158).

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

998831490 is a wasteful number, since it uses less digits than its factorization.

998831490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33294393.

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 998831490 is about 31604.2954359055. The cubic root of 998831490 is about 999.6103448553.

The spelling of 998831490 in words is "nine hundred ninety-eight million, eight hundred thirty-one thousand, four hundred ninety".