9900579 has 32 divisors (see below), whose sum is σ = 15301440. Its totient is φ = 5640192.

The previous prime is 9900547. The next prime is 9900589. The reversal of 9900579 is 9750099.

It is not a de Polignac number, because 9900579 - 2⁵ = 9900547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (9900509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72199 + ... + 72335.

It is an arithmetic number, because the mean of its divisors is an integer number (478170).

Almost surely, 2^9900579 is an apocalyptic number.

9900579 is a deficient number, since it is larger than the sum of its proper divisors (5400861).

9900579 is a wasteful number, since it uses less digits than its factorization.

9900579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279.

The product of its (nonzero) digits is 25515, while the sum is 39.

The square root of 9900579 is about 3146.5185523051. The cubic root of 9900579 is about 214.7271028327.

The spelling of 9900579 in words is "nine million, nine hundred thousand, five hundred seventy-nine".