1392916817 has 2 divisors, whose sum is σ = 1392916818. Its totient is φ = 1392916816.

The previous prime is 1392916793. The next prime is 1392916829. The reversal of 1392916817 is 7186192931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 875627281 + 517289536 = 29591^2 + 22744^2 .

It is a cyclic number.

It is not a de Polignac number, because 1392916817 - 2¹⁰ = 1392915793 is a prime.

It is a super-2 number, since 2×1392916817² = 3880434518162822978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1392916867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696458408 + 696458409.

It is an arithmetic number, because the mean of its divisors is an integer number (696458409).

Almost surely, 2^1392916817 is an apocalyptic number.

It is an amenable number.

1392916817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1392916817 is an equidigital number, since it uses as much as digits as its factorization.

1392916817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 47.

The square root of 1392916817 is about 37321.8008273985. The cubic root of 1392916817 is about 1116.7991136085.

The spelling of 1392916817 in words is "one billion, three hundred ninety-two million, nine hundred sixteen thousand, eight hundred seventeen".