397452499 has 2 divisors, whose sum is σ = 397452500. Its totient is φ = 397452498.

The previous prime is 397452493. The next prime is 397452529. The reversal of 397452499 is 994254793.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397452499 - 2⁵ = 397452467 is a prime.

It is a super-2 number, since 2×397452499² = 315936977922690002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (397452493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198726249 + 198726250.

It is an arithmetic number, because the mean of its divisors is an integer number (198726250).

Almost surely, 2^397452499 is an apocalyptic number.

397452499 is a deficient number, since it is larger than the sum of its proper divisors (1).

397452499 is an equidigital number, since it uses as much as digits as its factorization.

397452499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440, while the sum is 52.

The square root of 397452499 is about 19936.2107482841. The cubic root of 397452499 is about 735.2387883182.

The spelling of 397452499 in words is "three hundred ninety-seven million, four hundred fifty-two thousand, four hundred ninety-nine".