3979217 has 4 divisors (see below), whose sum is σ = 4340976. Its totient is φ = 3617460.

The previous prime is 3979211. The next prime is 3979219. The reversal of 3979217 is 7129793.

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 not a de Polignac number, because 3979217 - 2⁴ = 3979201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3979211) 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, 180863 + ... + 180884.

It is an arithmetic number, because the mean of its divisors is an integer number (1085244).

Almost surely, 2^3979217 is an apocalyptic number.

It is an amenable number.

3979217 is a deficient number, since it is larger than the sum of its proper divisors (361759).

3979217 is a wasteful number, since it uses less digits than its factorization.

3979217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361758.

The product of its digits is 23814, while the sum is 38.

The square root of 3979217 is about 1994.7974834554. The cubic root of 3979217 is about 158.4647030372.

The spelling of 3979217 in words is "three million, nine hundred seventy-nine thousand, two hundred seventeen".