2439399 has 4 divisors (see below), whose sum is σ = 3252536. Its totient is φ = 1626264.

The previous prime is 2439389. The next prime is 2439407. The reversal of 2439399 is 9939342.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2439399 - 2¹³ = 2431207 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2439319) 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, 406564 + ... + 406569.

It is an arithmetic number, because the mean of its divisors is an integer number (813134).

2^2439399 is an apocalyptic number.

2439399 is a deficient number, since it is larger than the sum of its proper divisors (813137).

2439399 is an equidigital number, since it uses as much as digits as its factorization.

2439399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813136.

The product of its digits is 52488, while the sum is 39.

The square root of 2439399 is about 1561.8575479217. The cubic root of 2439399 is about 134.6152557026.

The spelling of 2439399 in words is "two million, four hundred thirty-nine thousand, three hundred ninety-nine".