397548727 has 2 divisors, whose sum is σ = 397548728. Its totient is φ = 397548726.

The previous prime is 397548719. The next prime is 397548769. The reversal of 397548727 is 727845793.

It is a weak prime.

It is an emirp because it is prime and its reverse (727845793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 397548727 - 2³ = 397548719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397548127) 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, 198774363 + 198774364.

It is an arithmetic number, because the mean of its divisors is an integer number (198774364).

Almost surely, 2^397548727 is an apocalyptic number.

397548727 is a deficient number, since it is larger than the sum of its proper divisors (1).

397548727 is an equidigital number, since it uses as much as digits as its factorization.

397548727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2963520, while the sum is 52.

The square root of 397548727 is about 19938.6239996646. The cubic root of 397548727 is about 735.2981202293.

The spelling of 397548727 in words is "three hundred ninety-seven million, five hundred forty-eight thousand, seven hundred twenty-seven".