396734669 has 2 divisors, whose sum is σ = 396734670. Its totient is φ = 396734668.

The previous prime is 396734651. The next prime is 396734731. The reversal of 396734669 is 966437693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 374925769 + 21808900 = 19363^2 + 4670^2 .

It is a cyclic number.

It is not a de Polignac number, because 396734669 - 2²⁴ = 379957453 is a prime.

It is a super-2 number, since 2×396734669² = 314796795173079122, which contains 22 as substring.

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 396734669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396734369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198367334 + 198367335.

It is an arithmetic number, because the mean of its divisors is an integer number (198367335).

Almost surely, 2^396734669 is an apocalyptic number.

It is an amenable number.

396734669 is a deficient number, since it is larger than the sum of its proper divisors (1).

396734669 is an equidigital number, since it uses as much as digits as its factorization.

396734669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4408992, while the sum is 53.

The square root of 396734669 is about 19918.1994417166. The cubic root of 396734669 is about 734.7958888396.

The spelling of 396734669 in words is "three hundred ninety-six million, seven hundred thirty-four thousand, six hundred sixty-nine".