99020009902 has 16 divisors (see below), whose sum is σ = 162065649024. Its totient is φ = 44999955000.

The previous prime is 99020009899. The next prime is 99020009903. The reversal of 99020009902 is 20990002099.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99020009903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345624 + ... + 563467.

It is an arithmetic number, because the mean of its divisors is an integer number (10129103064).

Almost surely, 2^99020009902 is an apocalyptic number.

99020009902 is a deficient number, since it is larger than the sum of its proper divisors (63045639122).

99020009902 is a wasteful number, since it uses less digits than its factorization.

99020009902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914055.

The product of its (nonzero) digits is 26244, while the sum is 40.

The spelling of 99020009902 in words is "ninety-nine billion, twenty million, nine thousand, nine hundred two".