4399709 has 2 divisors, whose sum is σ = 4399710. Its totient is φ = 4399708.

The previous prime is 4399699. The next prime is 4399711. The reversal of 4399709 is 9079934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4214809 + 184900 = 2053^2 + 430^2 .

It is a cyclic number.

It is not a de Polignac number, because 4399709 - 2¹² = 4395613 is a prime.

Together with 4399711, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4399729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2199854 + 2199855.

It is an arithmetic number, because the mean of its divisors is an integer number (2199855).

Almost surely, 2^4399709 is an apocalyptic number.

It is an amenable number.

4399709 is a deficient number, since it is larger than the sum of its proper divisors (1).

4399709 is an equidigital number, since it uses as much as digits as its factorization.

4399709 is an evil number, because the sum of its binary digits is even.

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

The square root of 4399709 is about 2097.5483307900. The cubic root of 4399709 is about 163.8606415785.

The spelling of 4399709 in words is "four million, three hundred ninety-nine thousand, seven hundred nine".