99873977 has 4 divisors (see below), whose sum is σ = 114141696. Its totient is φ = 85606260.

The previous prime is 99873953. The next prime is 99874009. The reversal of 99873977 is 77937899.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 99873977 - 2²⁰ = 98825401 is a prime.

It is a super-2 number, since 2×99873977² = 19949622563593058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99873077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7133849 + ... + 7133862.

It is an arithmetic number, because the mean of its divisors is an integer number (28535424).

Almost surely, 2^99873977 is an apocalyptic number.

It is an amenable number.

99873977 is a deficient number, since it is larger than the sum of its proper divisors (14267719).

99873977 is a wasteful number, since it uses less digits than its factorization.

99873977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14267718.

The product of its digits is 6001128, while the sum is 59.

The square root of 99873977 is about 9993.6968635235. The cubic root of 99873977 is about 463.9638190798.

The spelling of 99873977 in words is "ninety-nine million, eight hundred seventy-three thousand, nine hundred seventy-seven".