97999873 has 4 divisors (see below), whose sum is σ = 98033220. Its totient is φ = 97966528.

The previous prime is 97999861. The next prime is 97999877. The reversal of 97999873 is 37899979.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67617729 + 30382144 = 8223^2 + 5512^2 .

It is a cyclic number.

It is not a de Polignac number, because 97999873 - 2²¹ = 95902721 is a prime.

It is a super-2 number, since 2×97999873² = 19207950216032258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97999877) 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 3 ways as a sum of consecutive naturals, for example, 11788 + ... + 18301.

It is an arithmetic number, because the mean of its divisors is an integer number (24508305).

Almost surely, 2^97999873 is an apocalyptic number.

It is an amenable number.

97999873 is a deficient number, since it is larger than the sum of its proper divisors (33347).

97999873 is a wasteful number, since it uses less digits than its factorization.

97999873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33346.

The product of its digits is 7715736, while the sum is 61.

The square root of 97999873 is about 9899.4885221409. The cubic root of 97999873 is about 461.0434300475.

The spelling of 97999873 in words is "ninety-seven million, nine hundred ninety-nine thousand, eight hundred seventy-three".