1315699439 has 2 divisors, whose sum is σ = 1315699440. Its totient is φ = 1315699438.

The previous prime is 1315699397. The next prime is 1315699453. The reversal of 1315699439 is 9349965131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1315699439 - 2⁸ = 1315699183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315699739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657849719 + 657849720.

It is an arithmetic number, because the mean of its divisors is an integer number (657849720).

Almost surely, 2^1315699439 is an apocalyptic number.

1315699439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315699439 is an equidigital number, since it uses as much as digits as its factorization.

1315699439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 787320, while the sum is 50.

The square root of 1315699439 is about 36272.5714417933. The cubic root of 1315699439 is about 1095.7687141272.

The spelling of 1315699439 in words is "one billion, three hundred fifteen million, six hundred ninety-nine thousand, four hundred thirty-nine".