3960725381 has 4 divisors (see below), whose sum is σ = 3967251072. Its totient is φ = 3954199692.

The previous prime is 3960725359. The next prime is 3960725383. The reversal of 3960725381 is 1835270693.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3960725381 - 2²² = 3956531077 is a prime.

It is a super-2 number, since 2×3960725381² = 31374691087395190322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3960725383) 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, 3261935 + ... + 3263148.

It is an arithmetic number, because the mean of its divisors is an integer number (991812768).

Almost surely, 2^3960725381 is an apocalyptic number.

It is an amenable number.

3960725381 is a deficient number, since it is larger than the sum of its proper divisors (6525691).

3960725381 is an equidigital number, since it uses as much as digits as its factorization.

3960725381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6525690.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 3960725381 is about 62934.2941566838. The cubic root of 3960725381 is about 1582.1885737601.

The spelling of 3960725381 in words is "three billion, nine hundred sixty million, seven hundred twenty-five thousand, three hundred eighty-one".