98979831 has 12 divisors (see below), whose sum is σ = 151381152. Its totient is φ = 62104896.

The previous prime is 98979809. The next prime is 98979877. The reversal of 98979831 is 13897989.

It is not a de Polignac number, because 98979831 - 2⁵ = 98979799 is a prime.

It is a super-2 number, since 2×98979831² = 19594013889577122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98979131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 323311 + ... + 323616.

It is an arithmetic number, because the mean of its divisors is an integer number (12615096).

Almost surely, 2^98979831 is an apocalyptic number.

98979831 is a deficient number, since it is larger than the sum of its proper divisors (52401321).

98979831 is a wasteful number, since it uses less digits than its factorization.

98979831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646950 (or 646947 counting only the distinct ones).

The product of its digits is 979776, while the sum is 54.

The square root of 98979831 is about 9948.8607890552. The cubic root of 98979831 is about 462.5750835977.

The spelling of 98979831 in words is "ninety-eight million, nine hundred seventy-nine thousand, eight hundred thirty-one".