1392996791 has 4 divisors (see below), whose sum is σ = 1398975552. Its totient is φ = 1387018032.

The previous prime is 1392996769. The next prime is 1392996851. The reversal of 1392996791 is 1976992931.

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-1392996791 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 (1392996751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2989031 + ... + 2989496.

It is an arithmetic number, because the mean of its divisors is an integer number (349743888).

Almost surely, 2^1392996791 is an apocalyptic number.

1392996791 is a deficient number, since it is larger than the sum of its proper divisors (5978761).

1392996791 is an equidigital number, since it uses as much as digits as its factorization.

1392996791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5978760.

The product of its digits is 1653372, while the sum is 56.

The square root of 1392996791 is about 37322.8722233432. The cubic root of 1392996791 is about 1116.8204867879.

The spelling of 1392996791 in words is "one billion, three hundred ninety-two million, nine hundred ninety-six thousand, seven hundred ninety-one".