396889369 has 2 divisors, whose sum is σ = 396889370. Its totient is φ = 396889368.

The previous prime is 396889333. The next prime is 396889397. The reversal of 396889369 is 963988693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 387617344 + 9272025 = 19688^2 + 3045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396889369 is a prime.

It is a super-2 number, since 2×396889369² = 315042342450436322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (396889319) 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, 198444684 + 198444685.

It is an arithmetic number, because the mean of its divisors is an integer number (198444685).

Almost surely, 2^396889369 is an apocalyptic number.

It is an amenable number.

396889369 is a deficient number, since it is larger than the sum of its proper divisors (1).

396889369 is an equidigital number, since it uses as much as digits as its factorization.

396889369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15116544, while the sum is 61.

The square root of 396889369 is about 19922.0824463709. The cubic root of 396889369 is about 734.8913835209.

The spelling of 396889369 in words is "three hundred ninety-six million, eight hundred eighty-nine thousand, three hundred sixty-nine".