1315439 has 4 divisors (see below), whose sum is σ = 1372656. Its totient is φ = 1258224.

The previous prime is 1315399. The next prime is 1315441. The reversal of 1315439 is 9345131.

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

It is a cyclic number.

It is not a de Polignac number, because 1315439 - 2⁸ = 1315183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1395439) 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, 28574 + ... + 28619.

It is an arithmetic number, because the mean of its divisors is an integer number (343164).

2^1315439 is an apocalyptic number.

1315439 is a deficient number, since it is larger than the sum of its proper divisors (57217).

1315439 is an equidigital number, since it uses as much as digits as its factorization.

1315439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57216.

The product of its digits is 1620, while the sum is 26.

The square root of 1315439 is about 1146.9258912415. The cubic root of 1315439 is about 109.5696407912.

The spelling of 1315439 in words is "one million, three hundred fifteen thousand, four hundred thirty-nine".