397533419 has 2 divisors, whose sum is σ = 397533420. Its totient is φ = 397533418.

The previous prime is 397533391. The next prime is 397533427. The reversal of 397533419 is 914335793.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 397533419 - 2⁸ = 397533163 is a prime.

It is a super-2 number, since 2×397533419² = 316065638443659122, 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 397533419.

It is not a weakly prime, because it can be changed into another prime (397533469) 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, 198766709 + 198766710.

It is an arithmetic number, because the mean of its divisors is an integer number (198766710).

Almost surely, 2^397533419 is an apocalyptic number.

397533419 is a deficient number, since it is larger than the sum of its proper divisors (1).

397533419 is an equidigital number, since it uses as much as digits as its factorization.

397533419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 306180, while the sum is 44.

The square root of 397533419 is about 19938.2401179241. The cubic root of 397533419 is about 735.2886823187.

The spelling of 397533419 in words is "three hundred ninety-seven million, five hundred thirty-three thousand, four hundred nineteen".