3945979 has 8 divisors (see below), whose sum is σ = 4101120. Its totient is φ = 3793896.

The previous prime is 3945973. The next prime is 3945983. The reversal of 3945979 is 9795493.

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 3945979 - 2⁹ = 3945467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3945973) 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, 2062 + ... + 3484.

It is an arithmetic number, because the mean of its divisors is an integer number (512640).

Almost surely, 2^3945979 is an apocalyptic number.

3945979 is a deficient number, since it is larger than the sum of its proper divisors (155141).

3945979 is a wasteful number, since it uses less digits than its factorization.

3945979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529.

The product of its digits is 306180, while the sum is 46.

The square root of 3945979 is about 1986.4488415260. The cubic root of 3945979 is about 158.0222555842.

The spelling of 3945979 in words is "three million, nine hundred forty-five thousand, nine hundred seventy-nine".