3979257 has 4 divisors (see below), whose sum is σ = 5305680. Its totient is φ = 2652836.

The previous prime is 3979247. The next prime is 3979259. The reversal of 3979257 is 7529793.

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 3979257 - 2⁶ = 3979193 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3979259) 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, 663207 + ... + 663212.

It is an arithmetic number, because the mean of its divisors is an integer number (1326420).

Almost surely, 2^3979257 is an apocalyptic number.

It is an amenable number.

3979257 is a deficient number, since it is larger than the sum of its proper divisors (1326423).

3979257 is a wasteful number, since it uses less digits than its factorization.

3979257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326422.

The product of its digits is 119070, while the sum is 42.

The square root of 3979257 is about 1994.8075095106. The cubic root of 3979257 is about 158.4652340099.

The spelling of 3979257 in words is "three million, nine hundred seventy-nine thousand, two hundred fifty-seven".