97899879 has 32 divisors (see below), whose sum is σ = 163547136. Its totient is φ = 50605920.

The previous prime is 97899871. The next prime is 97899883.

97899879 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 97899879 - 2³ = 97899871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97899871) 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 31 ways as a sum of consecutive naturals, for example, 51504 + ... + 53370.

It is an arithmetic number, because the mean of its divisors is an integer number (5110848).

Almost surely, 2^97899879 is an apocalyptic number.

97899879 is a deficient number, since it is larger than the sum of its proper divisors (65647257).

97899879 is a wasteful number, since it uses less digits than its factorization.

97899879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115.

The product of its digits is 20575296, while the sum is 66.

The square root of 97899879 is about 9894.4367702260. The cubic root of 97899879 is about 460.8865683968.

The spelling of 97899879 in words is "ninety-seven million, eight hundred ninety-nine thousand, eight hundred seventy-nine".