396271769 has 2 divisors, whose sum is σ = 396271770. Its totient is φ = 396271768.

The previous prime is 396271763. The next prime is 396271781. The reversal of 396271769 is 967172693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 275161744 + 121110025 = 16588^2 + 11005^2 .

It is a cyclic number.

It is not a de Polignac number, because 396271769 - 2¹² = 396267673 is a prime.

It is a super-2 number, since 2×396271769² = 314062629812778722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (396271763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198135884 + 198135885.

It is an arithmetic number, because the mean of its divisors is an integer number (198135885).

Almost surely, 2^396271769 is an apocalyptic number.

It is an amenable number.

396271769 is a deficient number, since it is larger than the sum of its proper divisors (1).

396271769 is an equidigital number, since it uses as much as digits as its factorization.

396271769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 50.

The square root of 396271769 is about 19906.5760240178. The cubic root of 396271769 is about 734.5099971870.

The spelling of 396271769 in words is "three hundred ninety-six million, two hundred seventy-one thousand, seven hundred sixty-nine".