3997858064 has 20 divisors (see below), whose sum is σ = 7748725404. Its totient is φ = 1998187008.

The previous prime is 3997858063. The next prime is 3997858069. The reversal of 3997858064 is 4608587993.

It can be written as a sum of positive squares in 2 ways, for example, as 2484025600 + 1513832464 = 49840^2 + 38908^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3997857994 and 3997858012.

It is not an unprimeable number, because it can be changed into a prime (3997858063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557 + ... + 89420.

Almost surely, 2^3997858064 is an apocalyptic number.

It is an amenable number.

3997858064 is a deficient number, since it is larger than the sum of its proper divisors (3750867340).

3997858064 is a wasteful number, since it uses less digits than its factorization.

3997858064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92762 (or 92756 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 59.

The square root of 3997858064 is about 63228.6174449513. The cubic root of 3997858064 is about 1587.1176587564.

The spelling of 3997858064 in words is "three billion, nine hundred ninety-seven million, eight hundred fifty-eight thousand, sixty-four".