3947390080 has 64 divisors (see below), whose sum is σ = 9445363200. Its totient is φ = 1577511936.

The previous prime is 3947390063. The next prime is 3947390113. The reversal of 3947390080 is 800937493.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 947041 + ... + 951199.

It is an arithmetic number, because the mean of its divisors is an integer number (147583800).

Almost surely, 2^3947390080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3947390080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4722681600).

3947390080 is an abundant number, since it is smaller than the sum of its proper divisors (5497973120).

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

3947390080 is a wasteful number, since it uses less digits than its factorization.

3947390080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5661 (or 5649 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 3947390080 is about 62828.2586102782. The cubic root of 3947390080 is about 1580.4108956433.

The spelling of 3947390080 in words is "three billion, nine hundred forty-seven million, three hundred ninety thousand, eighty".