99744909 has 16 divisors (see below), whose sum is σ = 145844544. Its totient is φ = 60134400.

The previous prime is 99744893. The next prime is 99744913. The reversal of 99744909 is 90944799.

It is not a de Polignac number, because 99744909 - 2⁴ = 99744893 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99744209) 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 15 ways as a sum of consecutive naturals, for example, 1462 + ... + 14199.

It is an arithmetic number, because the mean of its divisors is an integer number (9115284).

Almost surely, 2^99744909 is an apocalyptic number.

It is an amenable number.

99744909 is a deficient number, since it is larger than the sum of its proper divisors (46099635).

99744909 is a wasteful number, since it uses less digits than its factorization.

99744909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15868.

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 99744909 is about 9987.2373056817. The cubic root of 99744909 is about 463.7638714450.

The spelling of 99744909 in words is "ninety-nine million, seven hundred forty-four thousand, nine hundred nine".