3903979 has 4 divisors (see below), whose sum is σ = 3999240. Its totient is φ = 3808720.

The previous prime is 3903973. The next prime is 3904001. The reversal of 3903979 is 9793093.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9793093 = 2543 ⋅3851.

It is a cyclic number.

It is not a de Polignac number, because 3903979 - 2⁵ = 3903947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3903973) 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, 47569 + ... + 47650.

It is an arithmetic number, because the mean of its divisors is an integer number (999810).

Almost surely, 2^3903979 is an apocalyptic number.

3903979 is a deficient number, since it is larger than the sum of its proper divisors (95261).

3903979 is an equidigital number, since it uses as much as digits as its factorization.

3903979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95260.

The product of its (nonzero) digits is 45927, while the sum is 40.

The square root of 3903979 is about 1975.8489314722. The cubic root of 3903979 is about 157.4596049928.

The spelling of 3903979 in words is "three million, nine hundred three thousand, nine hundred seventy-nine".