2399439 has 8 divisors (see below), whose sum is σ = 3656320. Its totient is φ = 1371096.

The previous prime is 2399407. The next prime is 2399461. The reversal of 2399439 is 9349932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2399439 - 2⁵ = 2399407 is a prime.

It is a Duffinian number.

2399439 is a lucky number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 2399397 and 2399406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2399479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57109 + ... + 57150.

It is an arithmetic number, because the mean of its divisors is an integer number (457040).

2^2399439 is an apocalyptic number.

2399439 is a deficient number, since it is larger than the sum of its proper divisors (1256881).

2399439 is a wasteful number, since it uses less digits than its factorization.

2399439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114269.

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

The square root of 2399439 is about 1549.0122659295. The cubic root of 2399439 is about 133.8761572067.

The spelling of 2399439 in words is "two million, three hundred ninety-nine thousand, four hundred thirty-nine".