395573489 has 2 divisors, whose sum is σ = 395573490. Its totient is φ = 395573488.

The previous prime is 395573417. The next prime is 395573501. The reversal of 395573489 is 984375593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309232225 + 86341264 = 17585^2 + 9292^2 .

It is a cyclic number.

It is not a de Polignac number, because 395573489 - 2¹⁶ = 395507953 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 395573489.

It is not a weakly prime, because it can be changed into another prime (395573989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197786744 + 197786745.

It is an arithmetic number, because the mean of its divisors is an integer number (197786745).

Almost surely, 2^395573489 is an apocalyptic number.

It is an amenable number.

395573489 is a deficient number, since it is larger than the sum of its proper divisors (1).

395573489 is an equidigital number, since it uses as much as digits as its factorization.

395573489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4082400, while the sum is 53.

The square root of 395573489 is about 19889.0293629428. The cubic root of 395573489 is about 734.0783109580.

The spelling of 395573489 in words is "three hundred ninety-five million, five hundred seventy-three thousand, four hundred eighty-nine".