392039489 has 2 divisors, whose sum is σ = 392039490. Its totient is φ = 392039488.

The previous prime is 392039467. The next prime is 392039491. The reversal of 392039489 is 984930293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391367089 + 672400 = 19783^2 + 820^2 .

It is an emirp because it is prime and its reverse (984930293) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 392039489 - 2⁸ = 392039233 is a prime.

It is a super-2 number, since 2×392039489² = 307389921870762242, which contains 22 as substring.

Together with 392039491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (392039449) 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, 196019744 + 196019745.

It is an arithmetic number, because the mean of its divisors is an integer number (196019745).

Almost surely, 2^392039489 is an apocalyptic number.

It is an amenable number.

392039489 is a deficient number, since it is larger than the sum of its proper divisors (1).

392039489 is an equidigital number, since it uses as much as digits as its factorization.

392039489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 392039489 is about 19799.9870959554. The cubic root of 392039489 is about 731.8857164045.

The spelling of 392039489 in words is "three hundred ninety-two million, thirty-nine thousand, four hundred eighty-nine".