99979347 has 16 divisors (see below), whose sum is σ = 144039168. Its totient is φ = 61320480.

The previous prime is 99979337. The next prime is 99979357. The reversal of 99979347 is 74397999.

It is an interprime number because it is at equal distance from previous prime (99979337) and next prime (99979357).

It is not a de Polignac number, because 99979347 - 2⁷ = 99979219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99979337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8008 + ... + 16250.

It is an arithmetic number, because the mean of its divisors is an integer number (9002448).

Almost surely, 2^99979347 is an apocalyptic number.

99979347 is a deficient number, since it is larger than the sum of its proper divisors (44059821).

99979347 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (99979346) it forms an eRAP, since the sums of their prime factors are consecutive (8569 and 8570).

99979347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8570.

The product of its digits is 3857868, while the sum is 57.

The square root of 99979347 is about 9998.9672966762. The cubic root of 99979347 is about 464.1269269165.

The spelling of 99979347 in words is "ninety-nine million, nine hundred seventy-nine thousand, three hundred forty-seven".