1379457279 has 6 divisors (see below), whose sum is σ = 1992549416. Its totient is φ = 919638180.

The previous prime is 1379457263. The next prime is 1379457301. The reversal of 1379457279 is 9727549731.

It is not a de Polignac number, because 1379457279 - 2⁴ = 1379457263 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 (1379457179) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76636507 + ... + 76636524.

Almost surely, 2^1379457279 is an apocalyptic number.

1379457279 is a deficient number, since it is larger than the sum of its proper divisors (613092137).

1379457279 is a wasteful number, since it uses less digits than its factorization.

1379457279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153273037 (or 153273034 counting only the distinct ones).

The product of its digits is 3333960, while the sum is 54.

The square root of 1379457279 is about 37141.0457445668. The cubic root of 1379457279 is about 1113.1903128719.

The spelling of 1379457279 in words is "one billion, three hundred seventy-nine million, four hundred fifty-seven thousand, two hundred seventy-nine".