397052269 has 2 divisors, whose sum is σ = 397052270. Its totient is φ = 397052268.

The previous prime is 397052263. The next prime is 397052317. The reversal of 397052269 is 962250793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 348568900 + 48483369 = 18670^2 + 6963^2 .

It is a cyclic number.

It is not a de Polignac number, because 397052269 - 2³ = 397052261 is a prime.

It is a super-2 number, since 2×397052269² = 315301008636096722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397052261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198526134 + 198526135.

It is an arithmetic number, because the mean of its divisors is an integer number (198526135).

Almost surely, 2^397052269 is an apocalyptic number.

It is an amenable number.

397052269 is a deficient number, since it is larger than the sum of its proper divisors (1).

397052269 is an equidigital number, since it uses as much as digits as its factorization.

397052269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 397052269 is about 19926.1704549570. The cubic root of 397052269 is about 734.9919131570.

The spelling of 397052269 in words is "three hundred ninety-seven million, fifty-two thousand, two hundred sixty-nine".