98309979 has 24 divisors (see below), whose sum is σ = 145034864. Its totient is φ = 64152000.

The previous prime is 98309957. The next prime is 98309987. The reversal of 98309979 is 97990389.

It is a happy number.

It is not a de Polignac number, because 98309979 - 2⁹ = 98309467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98309179) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181449 + ... + 181989.

Almost surely, 2^98309979 is an apocalyptic number.

98309979 is a deficient number, since it is larger than the sum of its proper divisors (46724885).

98309979 is a wasteful number, since it uses less digits than its factorization.

98309979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939 (or 936 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 54.

The square root of 98309979 is about 9915.1388795115. The cubic root of 98309979 is about 461.5292190906.

The spelling of 98309979 in words is "ninety-eight million, three hundred nine thousand, nine hundred seventy-nine".