1392655489 has 2 divisors, whose sum is σ = 1392655490. Its totient is φ = 1392655488.

The previous prime is 1392655463. The next prime is 1392655513. The reversal of 1392655489 is 9845562931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1243620225 + 149035264 = 35265^2 + 12208^2 .

It is a cyclic number.

It is not a de Polignac number, because 1392655489 - 2⁷ = 1392655361 is a prime.

It is a super-2 number, since 2×1392655489² = 3878978622083658242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1392655409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696327744 + 696327745.

It is an arithmetic number, because the mean of its divisors is an integer number (696327745).

Almost surely, 2^1392655489 is an apocalyptic number.

It is an amenable number.

1392655489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1392655489 is an equidigital number, since it uses as much as digits as its factorization.

1392655489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2332800, while the sum is 52.

The square root of 1392655489 is about 37318.2996531192. The cubic root of 1392655489 is about 1116.7292675778.

The spelling of 1392655489 in words is "one billion, three hundred ninety-two million, six hundred fifty-five thousand, four hundred eighty-nine".