397469399 has 2 divisors, whose sum is σ = 397469400. Its totient is φ = 397469398.

The previous prime is 397469377. The next prime is 397469407. The reversal of 397469399 is 993964793.

It is a strong prime.

It is an emirp because it is prime and its reverse (993964793) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397469399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397469309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198734699 + 198734700.

It is an arithmetic number, because the mean of its divisors is an integer number (198734700).

Almost surely, 2^397469399 is an apocalyptic number.

397469399 is a deficient number, since it is larger than the sum of its proper divisors (1).

397469399 is an equidigital number, since it uses as much as digits as its factorization.

397469399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9920232, while the sum is 59.

The square root of 397469399 is about 19936.6345956383. The cubic root of 397469399 is about 735.2492091521.

The spelling of 397469399 in words is "three hundred ninety-seven million, four hundred sixty-nine thousand, three hundred ninety-nine".