99007820 has 24 divisors (see below), whose sum is σ = 208156704. Its totient is φ = 39557376.

The previous prime is 99007817. The next prime is 99007829. The reversal of 99007820 is 2870099.

It is not an unprimeable number, because it can be changed into a prime (99007829) 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, 18932 + ... + 23588.

It is an arithmetic number, because the mean of its divisors is an integer number (8673196).

Almost surely, 2^99007820 is an apocalyptic number.

It is an amenable number.

99007820 is an abundant number, since it is smaller than the sum of its proper divisors (109148884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99007820 is a wasteful number, since it uses less digits than its factorization.

99007820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5729 (or 5727 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 99007820 is about 9950.2673330921. The cubic root of 99007820 is about 462.6186810112.

The spelling of 99007820 in words is "ninety-nine million, seven thousand, eight hundred twenty".