3955403664 has 75 divisors (see below), whose sum is σ = 11454642507. Its totient is φ = 1317713184.

The previous prime is 3955403611. The next prime is 3955403687. The reversal of 3955403664 is 4663045593.

The square root of 3955403664 is 62892.

It is a perfect power (a square), and thus also a powerful number.

3955403664 is a `hidden beast` number, since 3 + 9 + 554 + 0 + 36 + 64 = 666.

3955403664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2263239 + ... + 2264985.

Almost surely, 2^3955403664 is an apocalyptic number.

3955403664 is the 62892-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3955403664

3955403664 is an abundant number, since it is smaller than the sum of its proper divisors (7499238843).

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

3955403664 is an frugal number, since it uses more digits than its factorization.

3955403664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3514 (or 1752 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

The cubic root of 3955403664 is about 1581.4796351257.

The spelling of 3955403664 in words is "three billion, nine hundred fifty-five million, four hundred three thousand, six hundred sixty-four".