3953391376 has 45 divisors (see below), whose sum is σ = 8425230933. Its totient is φ = 1795738560.

The previous prime is 3953391359. The next prime is 3953391401. The reversal of 3953391376 is 6731933593.

The square root of 3953391376 is 62876.

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

It can be written as a sum of positive squares in only one way, i.e., 266472976 + 3686918400 = 16324^2 + 60720^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2765830 + ... + 2767258.

Almost surely, 2^3953391376 is an apocalyptic number.

3953391376 is the 62876-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3953391376

3953391376 is an abundant number, since it is smaller than the sum of its proper divisors (4471839557).

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

3953391376 is an equidigital number, since it uses as much as digits as its factorization.

3953391376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888 (or 1442 counting only the distinct ones).

The product of its digits is 1377810, while the sum is 49.

The cubic root of 3953391376 is about 1581.2114001920.

Multiplying 3953391376 by its sum of digits (49), we get a square (193716177424 = 440132²).

The spelling of 3953391376 in words is "three billion, nine hundred fifty-three million, three hundred ninety-one thousand, three hundred seventy-six".