397456351 has 2 divisors, whose sum is σ = 397456352. Its totient is φ = 397456350.

The previous prime is 397456349. The next prime is 397456357. The reversal of 397456351 is 153654793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397456351 - 2¹ = 397456349 is a prime.

Together with 397456349, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 397456298 and 397456307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397456357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198728175 + 198728176.

It is an arithmetic number, because the mean of its divisors is an integer number (198728176).

Almost surely, 2^397456351 is an apocalyptic number.

397456351 is a deficient number, since it is larger than the sum of its proper divisors (1).

397456351 is an equidigital number, since it uses as much as digits as its factorization.

397456351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 43.

The square root of 397456351 is about 19936.3073561781. The cubic root of 397456351 is about 735.2411635544.

The spelling of 397456351 in words is "three hundred ninety-seven million, four hundred fifty-six thousand, three hundred fifty-one".