90898876444 has 12 divisors (see below), whose sum is σ = 168430271184. Its totient is φ = 42775941824.

The previous prime is 90898876441. The next prime is 90898876463. The reversal of 90898876444 is 44467889809.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 90898876444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90898876441) 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 3 ways as a sum of consecutive naturals, for example, 668374024 + ... + 668374159.

It is an arithmetic number, because the mean of its divisors is an integer number (14035855932).

Almost surely, 2^90898876444 is an apocalyptic number.

It is an amenable number.

90898876444 is a deficient number, since it is larger than the sum of its proper divisors (77531394740).

90898876444 is a wasteful number, since it uses less digits than its factorization.

90898876444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336748204 (or 1336748202 counting only the distinct ones).

The product of its (nonzero) digits is 111476736, while the sum is 67.

The spelling of 90898876444 in words is "ninety billion, eight hundred ninety-eight million, eight hundred seventy-six thousand, four hundred forty-four".