99679147 has 4 divisors (see below), whose sum is σ = 102373216. Its totient is φ = 96985080.

The previous prime is 99679133. The next prime is 99679163. The reversal of 99679147 is 74197699.

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

It is a cyclic number.

It is not a de Polignac number, because 99679147 - 2¹⁹ = 99154859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99679094 and 99679103.

It is not an unprimeable number, because it can be changed into a prime (99679247) 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, 1346979 + ... + 1347052.

It is an arithmetic number, because the mean of its divisors is an integer number (25593304).

Almost surely, 2^99679147 is an apocalyptic number.

99679147 is a deficient number, since it is larger than the sum of its proper divisors (2694069).

99679147 is a wasteful number, since it uses less digits than its factorization.

99679147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2694068.

The product of its digits is 857304, while the sum is 52.

The square root of 99679147 is about 9983.9444609833. The cubic root of 99679147 is about 463.6619289166.

The spelling of 99679147 in words is "ninety-nine million, six hundred seventy-nine thousand, one hundred forty-seven".