1374257939 has 4 divisors (see below), whose sum is σ = 1386865920. Its totient is φ = 1361649960.

The previous prime is 1374257903. The next prime is 1374257947. The reversal of 1374257939 is 9397524731.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1374257939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1374257239) 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, 6303827 + ... + 6304044.

It is an arithmetic number, because the mean of its divisors is an integer number (346716480).

Almost surely, 2^1374257939 is an apocalyptic number.

1374257939 is a deficient number, since it is larger than the sum of its proper divisors (12607981).

1374257939 is a wasteful number, since it uses less digits than its factorization.

1374257939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12607980.

The product of its digits is 1428840, while the sum is 50.

The square root of 1374257939 is about 37070.9851366267. The cubic root of 1374257939 is about 1111.7899694225.

The spelling of 1374257939 in words is "one billion, three hundred seventy-four million, two hundred fifty-seven thousand, nine hundred thirty-nine".