97999959 has 16 divisors (see below), whose sum is σ = 135256064. Its totient is φ = 63050400.

The previous prime is 97999949. The next prime is 98000027. The reversal of 97999959 is 95999979.

It is not a de Polignac number, because 97999959 - 2⁴ = 97999943 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97999959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97999919) 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 15 ways as a sum of consecutive naturals, for example, 37902 + ... + 40404.

It is an arithmetic number, because the mean of its divisors is an integer number (8453504).

Almost surely, 2^97999959 is an apocalyptic number.

97999959 is a deficient number, since it is larger than the sum of its proper divisors (37256105).

97999959 is a wasteful number, since it uses less digits than its factorization.

97999959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2958.

The product of its digits is 18600435, while the sum is 66.

The square root of 97999959 is about 9899.4928657987. The cubic root of 97999959 is about 461.0435649106.

The spelling of 97999959 in words is "ninety-seven million, nine hundred ninety-nine thousand, nine hundred fifty-nine".