99976 has 8 divisors (see below), whose sum is σ = 187470. Its totient is φ = 49984.

The previous prime is 99971. The next prime is 99989. The reversal of 99976 is 67999.

It can be written as a sum of positive squares in only one way, i.e., 84100 + 15876 = 290^2 + 126^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99971) by changing a digit.

99976 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6241 + ... + 6256.

2⁹⁹⁹⁷⁶ is an apocalyptic number.

It is an amenable number.

99976 is a deficient number, since it is larger than the sum of its proper divisors (87494).

99976 is a wasteful number, since it uses less digits than its factorization.

99976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12503 (or 12499 counting only the distinct ones).

The product of its digits is 30618, while the sum is 40.

The square root of 99976 is about 316.1898164078. The cubic root of 99976 is about 46.4121747680.

The spelling of 99976 in words is "ninety-nine thousand, nine hundred seventy-six".