392942969 has 2 divisors, whose sum is σ = 392942970. Its totient is φ = 392942968.

The previous prime is 392942909. The next prime is 392943037. The reversal of 392942969 is 969249293.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 295427344 + 97515625 = 17188^2 + 9875^2 .

It is a cyclic number.

It is not a de Polignac number, because 392942969 - 2²⁴ = 376165753 is a prime.

It is a super-2 number, since 2×392942969² = 308808353773069922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 392942969.

It is not a weakly prime, because it can be changed into another prime (392942909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196471484 + 196471485.

It is an arithmetic number, because the mean of its divisors is an integer number (196471485).

Almost surely, 2^392942969 is an apocalyptic number.

It is an amenable number.

392942969 is a deficient number, since it is larger than the sum of its proper divisors (1).

392942969 is an equidigital number, since it uses as much as digits as its factorization.

392942969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1889568, while the sum is 53.

The square root of 392942969 is about 19822.7891327129. The cubic root of 392942969 is about 732.4475108284.

The spelling of 392942969 in words is "three hundred ninety-two million, nine hundred forty-two thousand, nine hundred sixty-nine".