3951957 has 4 divisors (see below), whose sum is σ = 5269280. Its totient is φ = 2634636.

The previous prime is 3951947. The next prime is 3951967. The reversal of 3951957 is 7591593.

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 an interprime number because it is at equal distance from previous prime (3951947) and next prime (3951967).

It is not a de Polignac number, because 3951957 - 2¹² = 3947861 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3951907) 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, 658657 + ... + 658662.

It is an arithmetic number, because the mean of its divisors is an integer number (1317320).

Almost surely, 2^3951957 is an apocalyptic number.

It is an amenable number.

3951957 is a deficient number, since it is larger than the sum of its proper divisors (1317323).

3951957 is a wasteful number, since it uses less digits than its factorization.

3951957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317322.

The product of its digits is 42525, while the sum is 39.

The square root of 3951957 is about 1987.9529672505. The cubic root of 3951957 is about 158.1020144481.

The spelling of 3951957 in words is "three million, nine hundred fifty-one thousand, nine hundred fifty-seven".