99944420086 has 16 divisors (see below), whose sum is σ = 171690992640. Its totient is φ = 42743897640.

The previous prime is 99944420083. The next prime is 99944420117. The reversal of 99944420086 is 68002444999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99944420083) 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, 7445160 + ... + 7458571.

It is an arithmetic number, because the mean of its divisors is an integer number (10730687040).

Almost surely, 2^99944420086 is an apocalyptic number.

99944420086 is a deficient number, since it is larger than the sum of its proper divisors (71746572554).

99944420086 is a wasteful number, since it uses less digits than its factorization.

99944420086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14904219.

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 99944420086 in words is "ninety-nine billion, nine hundred forty-four million, four hundred twenty thousand, eighty-six".