90044638986 has 8 divisors (see below), whose sum is σ = 180089277984. Its totient is φ = 30014879660.

The previous prime is 90044638961. The next prime is 90044639011. The reversal of 90044638986 is 68983644009.

It is an interprime number because it is at equal distance from previous prime (90044638961) and next prime (90044639011).

It is a sphenic number, since it is the product of 3 distinct primes.

90044638986 is an admirable number.

It is a super-2 number, since 2×90044638986² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7503719910 + ... + 7503719921.

It is an arithmetic number, because the mean of its divisors is an integer number (22511159748).

Almost surely, 2^90044638986 is an apocalyptic number.

90044638986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

90044638986 is a wasteful number, since it uses less digits than its factorization.

90044638986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15007439836.

The product of its (nonzero) digits is 8957952, while the sum is 57.

The spelling of 90044638986 in words is "ninety billion, forty-four million, six hundred thirty-eight thousand, nine hundred eighty-six".