99825977 has 8 divisors (see below), whose sum is σ = 102400200. Its totient is φ = 97277440.

The previous prime is 99825961. The next prime is 99825991. The reversal of 99825977 is 77952899.

It can be written as a sum of positive squares in 4 ways, for example, as 942841 + 98883136 = 971^2 + 9944^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99825977 - 2⁴ = 99825961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99825997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1577 + ... + 14217.

It is an arithmetic number, because the mean of its divisors is an integer number (12800025).

Almost surely, 2^99825977 is an apocalyptic number.

It is an amenable number.

99825977 is a deficient number, since it is larger than the sum of its proper divisors (2574223).

99825977 is a wasteful number, since it uses less digits than its factorization.

99825977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12843.

The product of its digits is 2857680, while the sum is 56.

The square root of 99825977 is about 9991.2950612020. The cubic root of 99825977 is about 463.8894792879.

The spelling of 99825977 in words is "ninety-nine million, eight hundred twenty-five thousand, nine hundred seventy-seven".