392713489 has 27 divisors (see below), whose sum is σ = 485396667. Its totient is φ = 316754928.

The previous prime is 392713469. The next prime is 392713511. The reversal of 392713489 is 984317293.

The square root of 392713489 is 19817.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 46009089 + 346704400 = 6783^2 + 18620^2 .

It is not a de Polignac number, because 392713489 - 2⁷ = 392713361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (392713459) 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 in 26 ways as a sum of consecutive naturals, for example, 2635587 + ... + 2635735.

Almost surely, 2^392713489 is an apocalyptic number.

392713489 is the 19817-th square number.

392713489 is the 9909-th centered octagonal number.

It is an amenable number.

392713489 is a deficient number, since it is larger than the sum of its proper divisors (92683178).

392713489 is an equidigital number, since it uses as much as digits as its factorization.

392713489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350 (or 175 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The cubic root of 392713489 is about 732.3048991359.

The spelling of 392713489 in words is "three hundred ninety-two million, seven hundred thirteen thousand, four hundred eighty-nine".