397805743 has 2 divisors, whose sum is σ = 397805744. Its totient is φ = 397805742.

The previous prime is 397805711. The next prime is 397805761. The reversal of 397805743 is 347508793.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 397805743 - 2⁵ = 397805711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 397805693 and 397805702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397805773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198902871 + 198902872.

It is an arithmetic number, because the mean of its divisors is an integer number (198902872).

Almost surely, 2^397805743 is an apocalyptic number.

397805743 is a deficient number, since it is larger than the sum of its proper divisors (1).

397805743 is an equidigital number, since it uses as much as digits as its factorization.

397805743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 397805743 is about 19945.0681372614. The cubic root of 397805743 is about 735.4565433000.

The spelling of 397805743 in words is "three hundred ninety-seven million, eight hundred five thousand, seven hundred forty-three".