4393979 has 2 divisors, whose sum is σ = 4393980. Its totient is φ = 4393978.

The previous prime is 4393969. The next prime is 4393981. The reversal of 4393979 is 9793934.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4393979 - 2¹² = 4389883 is a prime.

Together with 4393981, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (4393919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2196989 + 2196990.

It is an arithmetic number, because the mean of its divisors is an integer number (2196990).

Almost surely, 2^4393979 is an apocalyptic number.

4393979 is a deficient number, since it is larger than the sum of its proper divisors (1).

4393979 is an equidigital number, since it uses as much as digits as its factorization.

4393979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183708, while the sum is 44.

The square root of 4393979 is about 2096.1820054566. The cubic root of 4393979 is about 163.7894755555.

The spelling of 4393979 in words is "four million, three hundred ninety-three thousand, nine hundred seventy-nine".