998910902 has 48 divisors (see below), whose sum is σ = 1753844400. Its totient is φ = 425145600.

The previous prime is 998910901. The next prime is 998910917. The reversal of 998910902 is 209019899.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998910901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 408002 + ... + 410442.

It is an arithmetic number, because the mean of its divisors is an integer number (36538425).

Almost surely, 2^998910902 is an apocalyptic number.

998910902 is a deficient number, since it is larger than the sum of its proper divisors (754933498).

998910902 is a wasteful number, since it uses less digits than its factorization.

998910902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573 (or 2562 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 47.

The square root of 998910902 is about 31605.5517591451. The cubic root of 998910902 is about 999.6368354608.

The spelling of 998910902 in words is "nine hundred ninety-eight million, nine hundred ten thousand, nine hundred two".