397854767 has 2 divisors, whose sum is σ = 397854768. Its totient is φ = 397854766.

The previous prime is 397854739. The next prime is 397854797. The reversal of 397854767 is 767458793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397854767 - 2¹⁸ = 397592623 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397854707) 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, 198927383 + 198927384.

It is an arithmetic number, because the mean of its divisors is an integer number (198927384).

Almost surely, 2^397854767 is an apocalyptic number.

397854767 is a deficient number, since it is larger than the sum of its proper divisors (1).

397854767 is an equidigital number, since it uses as much as digits as its factorization.

397854767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8890560, while the sum is 56.

The square root of 397854767 is about 19946.2970748959. The cubic root of 397854767 is about 735.4867536403.

The spelling of 397854767 in words is "three hundred ninety-seven million, eight hundred fifty-four thousand, seven hundred sixty-seven".