8920447064 has 8 divisors (see below), whose sum is σ = 16725838260. Its totient is φ = 4460223528.

The previous prime is 8920447061. The next prime is 8920447073. The reversal of 8920447064 is 4607440298.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8920447061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557527934 + ... + 557527949.

Almost surely, 2^8920447064 is an apocalyptic number.

It is an amenable number.

8920447064 is a deficient number, since it is larger than the sum of its proper divisors (7805391196).

8920447064 is a wasteful number, since it uses less digits than its factorization.

8920447064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115055889 (or 1115055885 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 44.

The square root of 8920447064 is about 94448.1183719401. The cubic root of 8920447064 is about 2073.9369065589.

The spelling of 8920447064 in words is "eight billion, nine hundred twenty million, four hundred forty-seven thousand, sixty-four".