392140369 has 2 divisors, whose sum is σ = 392140370. Its totient is φ = 392140368.

The previous prime is 392140361. The next prime is 392140403. The reversal of 392140369 is 963041293.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368179344 + 23961025 = 19188^2 + 4895^2 .

It is a cyclic number.

It is not a de Polignac number, because 392140369 - 2³ = 392140361 is a prime.

It is a super-2 number, since 2×392140369² = 307548137998912322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (392140361) 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 as a sum of consecutive naturals, namely, 196070184 + 196070185.

It is an arithmetic number, because the mean of its divisors is an integer number (196070185).

Almost surely, 2^392140369 is an apocalyptic number.

It is an amenable number.

392140369 is a deficient number, since it is larger than the sum of its proper divisors (1).

392140369 is an equidigital number, since it uses as much as digits as its factorization.

392140369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 392140369 is about 19802.5344085044. The cubic root of 392140369 is about 731.9484875463.

The spelling of 392140369 in words is "three hundred ninety-two million, one hundred forty thousand, three hundred sixty-nine".