99924779 has 4 divisors (see below), whose sum is σ = 101128776. Its totient is φ = 98720784.

The previous prime is 99924767. The next prime is 99924787. The reversal of 99924779 is 97742999.

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 99924779 - 2²⁴ = 83147563 is a prime.

It is a super-2 number, since 2×99924779² = 19969922916397682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99924179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601874 + ... + 602039.

It is an arithmetic number, because the mean of its divisors is an integer number (25282194).

Almost surely, 2^99924779 is an apocalyptic number.

99924779 is a deficient number, since it is larger than the sum of its proper divisors (1203997).

99924779 is a wasteful number, since it uses less digits than its factorization.

99924779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203996.

The product of its digits is 2571912, while the sum is 56.

The square root of 99924779 is about 9996.2382424590. The cubic root of 99924779 is about 464.0424725167.

The spelling of 99924779 in words is "ninety-nine million, nine hundred twenty-four thousand, seven hundred seventy-nine".