99999902 has 16 divisors (see below), whose sum is σ = 153945792. Its totient is φ = 48689280.

The previous prime is 99999847. The next prime is 99999931. The reversal of 99999902 is 20999999.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69563 + ... + 70985.

It is an arithmetic number, because the mean of its divisors is an integer number (9621612).

Almost surely, 2^99999902 is an apocalyptic number.

99999902 is a deficient number, since it is larger than the sum of its proper divisors (53945890).

99999902 is a wasteful number, since it uses less digits than its factorization.

99999902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323.

The product of its (nonzero) digits is 1062882, while the sum is 56.

The square root of 99999902 is about 9999.9950999988. The cubic root of 99999902 is about 464.1587317360.

It can be divided in two parts, 99 and 999902, that added together give a palindrome (1000001).

The spelling of 99999902 in words is "ninety-nine million, nine hundred ninety-nine thousand, nine hundred two".