98723979 has 12 divisors (see below), whose sum is σ = 142774632. Its totient is φ = 65736000.

The previous prime is 98723971. The next prime is 98723993. The reversal of 98723979 is 97932789.

It is not a de Polignac number, because 98723979 - 2³ = 98723971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (98723971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1704 + ... + 14154.

It is an arithmetic number, because the mean of its divisors is an integer number (11897886).

Almost surely, 2^98723979 is an apocalyptic number.

98723979 is a deficient number, since it is larger than the sum of its proper divisors (44050653).

98723979 is a wasteful number, since it uses less digits than its factorization.

98723979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13338 (or 13335 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 54.

The square root of 98723979 is about 9935.9941123171. The cubic root of 98723979 is about 462.1761710773.

The spelling of 98723979 in words is "ninety-eight million, seven hundred twenty-three thousand, nine hundred seventy-nine".