99724059 has 12 divisors (see below), whose sum is σ = 146020056. Its totient is φ = 65571552.

The previous prime is 99724043. The next prime is 99724087. The reversal of 99724059 is 95042799.

It is not a de Polignac number, because 99724059 - 2⁴ = 99724043 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (99724019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75237 + ... + 76550.

It is an arithmetic number, because the mean of its divisors is an integer number (12168338).

Almost surely, 2^99724059 is an apocalyptic number.

99724059 is a deficient number, since it is larger than the sum of its proper divisors (46295997).

99724059 is a wasteful number, since it uses less digits than its factorization.

99724059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151866 (or 151863 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 99724059 is about 9986.1934189159. The cubic root of 99724059 is about 463.7315551739.

The spelling of 99724059 in words is "ninety-nine million, seven hundred twenty-four thousand, fifty-nine".