13439455 has 4 divisors (see below), whose sum is σ = 16127352. Its totient is φ = 10751560.

The previous prime is 13439449. The next prime is 13439467. The reversal of 13439455 is 55493431.

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

It is not a de Polignac number, because 13439455 - 2¹¹ = 13437407 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13439455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1343941 + ... + 1343950.

It is an arithmetic number, because the mean of its divisors is an integer number (4031838).

Almost surely, 2^13439455 is an apocalyptic number.

13439455 is a deficient number, since it is larger than the sum of its proper divisors (2687897).

13439455 is an equidigital number, since it uses as much as digits as its factorization.

13439455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2687896.

The product of its digits is 32400, while the sum is 34.

The square root of 13439455 is about 3665.9862247423. The cubic root of 13439455 is about 237.7536643394.

The spelling of 13439455 in words is "thirteen million, four hundred thirty-nine thousand, four hundred fifty-five".