99009724 has 24 divisors (see below), whose sum is σ = 192589488. Its totient is φ = 44154240.

The previous prime is 99009721. The next prime is 99009727. The reversal of 99009724 is 42790099.

It is an interprime number because it is at equal distance from previous prime (99009721) and next prime (99009727).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99009721) 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, 18897 + ... + 23560.

It is an arithmetic number, because the mean of its divisors is an integer number (8024562).

Almost surely, 2^99009724 is an apocalyptic number.

It is an amenable number.

99009724 is a deficient number, since it is larger than the sum of its proper divisors (93579764).

99009724 is a wasteful number, since it uses less digits than its factorization.

99009724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42525 (or 42523 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 99009724 is about 9950.3630084535. The cubic root of 99009724 is about 462.6216465019.

The spelling of 99009724 in words is "ninety-nine million, nine thousand, seven hundred twenty-four".