4390979 has 4 divisors (see below), whose sum is σ = 4456584. Its totient is φ = 4325376.

The previous prime is 4390937. The next prime is 4391003. The reversal of 4390979 is 9790934.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9790934 = 2 ⋅4895467.

It is a cyclic number.

It is not a de Polignac number, because 4390979 - 2¹² = 4386883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4390909) 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, 32702 + ... + 32835.

It is an arithmetic number, because the mean of its divisors is an integer number (1114146).

Almost surely, 2^4390979 is an apocalyptic number.

4390979 is a deficient number, since it is larger than the sum of its proper divisors (65605).

4390979 is an equidigital number, since it uses as much as digits as its factorization.

4390979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65604.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 4390979 is about 2095.4662965555. The cubic root of 4390979 is about 163.7521911794.

The spelling of 4390979 in words is "four million, three hundred ninety thousand, nine hundred seventy-nine".