90844039064 has 8 divisors (see below), whose sum is σ = 170332573260. Its totient is φ = 45422019528.

The previous prime is 90844039019. The next prime is 90844039073. The reversal of 90844039064 is 46093044809.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

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 as a sum of consecutive naturals, namely, 5677752434 + ... + 5677752449.

Almost surely, 2^90844039064 is an apocalyptic number.

It is an amenable number.

90844039064 is a deficient number, since it is larger than the sum of its proper divisors (79488534196).

90844039064 is a wasteful number, since it uses less digits than its factorization.

90844039064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11355504889 (or 11355504885 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 90844039064 in words is "ninety billion, eight hundred forty-four million, thirty-nine thousand, sixty-four".