13439399 has 8 divisors (see below), whose sum is σ = 14249088. Its totient is φ = 12653280.

The previous prime is 13439381. The next prime is 13439407. The reversal of 13439399 is 99393431.

13439399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13439399 - 2¹⁶ = 13373863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13439339) 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, 4712 + ... + 7005.

It is an arithmetic number, because the mean of its divisors is an integer number (1781136).

Almost surely, 2^13439399 is an apocalyptic number.

13439399 is a deficient number, since it is larger than the sum of its proper divisors (809689).

13439399 is a wasteful number, since it uses less digits than its factorization.

13439399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11785.

The product of its digits is 78732, while the sum is 41.

The square root of 13439399 is about 3665.9785869533. The cubic root of 13439399 is about 237.7533341122.

The spelling of 13439399 in words is "thirteen million, four hundred thirty-nine thousand, three hundred ninety-nine".