99424639879 has 8 divisors (see below), whose sum is σ = 99672515712. Its totient is φ = 99176870520.

The previous prime is 99424639819. The next prime is 99424639901. The reversal of 99424639879 is 97893642499.

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 99424639879 - 2⁷ = 99424639751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99424639819) 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, 2041644 + ... + 2089774.

It is an arithmetic number, because the mean of its divisors is an integer number (12459064464).

Almost surely, 2^99424639879 is an apocalyptic number.

99424639879 is a deficient number, since it is larger than the sum of its proper divisors (247875833).

99424639879 is a wasteful number, since it uses less digits than its factorization.

99424639879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53237.

The product of its digits is 211631616, while the sum is 70.

The spelling of 99424639879 in words is "ninety-nine billion, four hundred twenty-four million, six hundred thirty-nine thousand, eight hundred seventy-nine".