3971957 has 8 divisors (see below), whose sum is σ = 4439232. Its totient is φ = 3522400.

The previous prime is 3971917. The next prime is 3971963. The reversal of 3971957 is 7591793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3971957 - 2¹⁸ = 3709813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3953 + ... + 4854.

It is an arithmetic number, because the mean of its divisors is an integer number (554904).

Almost surely, 2^3971957 is an apocalyptic number.

It is an amenable number.

3971957 is a deficient number, since it is larger than the sum of its proper divisors (467275).

3971957 is a wasteful number, since it uses less digits than its factorization.

3971957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8859.

The product of its digits is 59535, while the sum is 41.

The square root of 3971957 is about 1992.9769190836. The cubic root of 3971957 is about 158.3682724988.

The spelling of 3971957 in words is "three million, nine hundred seventy-one thousand, nine hundred fifty-seven".