8440445776 has 20 divisors (see below), whose sum is σ = 18689558752. Its totient is φ = 3617333856.

The previous prime is 8440445759. The next prime is 8440445789. The reversal of 8440445776 is 6775440448.

It is a super-2 number, since 2×8440445776² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37680450 + ... + 37680673.

Almost surely, 2^8440445776 is an apocalyptic number.

It is an amenable number.

8440445776 is an abundant number, since it is smaller than the sum of its proper divisors (10249112976).

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

8440445776 is a wasteful number, since it uses less digits than its factorization.

8440445776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75361138 (or 75361132 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 49.

The square root of 8440445776 is about 91871.8987286102. The cubic root of 8440445776 is about 2036.0501053616.

The spelling of 8440445776 in words is "eight billion, four hundred forty million, four hundred forty-five thousand, seven hundred seventy-six".