99949731 has 16 divisors (see below), whose sum is σ = 152891904. Its totient is φ = 56893824.

The previous prime is 99949711. The next prime is 99949771. The reversal of 99949731 is 13794999.

It is not a de Polignac number, because 99949731 - 2⁹ = 99949219 is a prime.

It is a super-2 number, since 2×99949731² = 19979897453944722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99949711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3526 + ... + 14571.

It is an arithmetic number, because the mean of its divisors is an integer number (9555744).

Almost surely, 2^99949731 is an apocalyptic number.

99949731 is a deficient number, since it is larger than the sum of its proper divisors (52942173).

99949731 is a wasteful number, since it uses less digits than its factorization.

99949731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18370.

The product of its digits is 551124, while the sum is 51.

The square root of 99949731 is about 9997.4862340490. The cubic root of 99949731 is about 464.0810943155.

The spelling of 99949731 in words is "ninety-nine million, nine hundred forty-nine thousand, seven hundred thirty-one".