397838411 has 2 divisors, whose sum is σ = 397838412. Its totient is φ = 397838410.

The previous prime is 397838387. The next prime is 397838417. The reversal of 397838411 is 114838793.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397838411 is a prime.

It is not a weakly prime, because it can be changed into another prime (397838417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198919205 + 198919206.

It is an arithmetic number, because the mean of its divisors is an integer number (198919206).

Almost surely, 2^397838411 is an apocalyptic number.

397838411 is a deficient number, since it is larger than the sum of its proper divisors (1).

397838411 is an equidigital number, since it uses as much as digits as its factorization.

397838411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The square root of 397838411 is about 19945.8870697695. The cubic root of 397838411 is about 735.4766747646.

The spelling of 397838411 in words is "three hundred ninety-seven million, eight hundred thirty-eight thousand, four hundred eleven".