98999957 has 16 divisors (see below), whose sum is σ = 117153792. Its totient is φ = 81866160.

The previous prime is 98999917. The next prime is 98999963. The reversal of 98999957 is 75999989.

It is a cyclic number.

It is not a de Polignac number, because 98999957 - 2⁶ = 98999893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 98999893 and 98999902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98999917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108698 + ... + 109604.

It is an arithmetic number, because the mean of its divisors is an integer number (7322112).

Almost surely, 2^98999957 is an apocalyptic number.

It is an amenable number.

98999957 is a deficient number, since it is larger than the sum of its proper divisors (18153835).

98999957 is a wasteful number, since it uses less digits than its factorization.

98999957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448.

The product of its digits is 16533720, while the sum is 65.

The square root of 98999957 is about 9949.8722102347. The cubic root of 98999957 is about 462.6064339416.

The spelling of 98999957 in words is "ninety-eight million, nine hundred ninety-nine thousand, nine hundred fifty-seven".