397168469 has 2 divisors, whose sum is σ = 397168470. Its totient is φ = 397168468.

The previous prime is 397168451. The next prime is 397168477. The reversal of 397168469 is 964861793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215943025 + 181225444 = 14695^2 + 13462^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397168469 is a prime.

It is a super-2 number, since 2×397168469² = 315485585535607922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 397168469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397168169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198584234 + 198584235.

It is an arithmetic number, because the mean of its divisors is an integer number (198584235).

Almost surely, 2^397168469 is an apocalyptic number.

It is an amenable number.

397168469 is a deficient number, since it is larger than the sum of its proper divisors (1).

397168469 is an equidigital number, since it uses as much as digits as its factorization.

397168469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 53.

The square root of 397168469 is about 19929.0860051333. The cubic root of 397168469 is about 735.0636062621.

The spelling of 397168469 in words is "three hundred ninety-seven million, one hundred sixty-eight thousand, four hundred sixty-nine".