397759 has 2 divisors, whose sum is σ = 397760. Its totient is φ = 397758.

The previous prime is 397757. The next prime is 397763. The reversal of 397759 is 957793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397759 - 2¹ = 397757 is a prime.

Together with 397757, it forms a pair of twin primes.

It is a nialpdrome in base 9.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198879 + 198880.

It is an arithmetic number, because the mean of its divisors is an integer number (198880).

2³⁹⁷⁷⁵⁹ is an apocalyptic number.

397759 is a deficient number, since it is larger than the sum of its proper divisors (1).

397759 is an equidigital number, since it uses as much as digits as its factorization.

397759 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 59535, while the sum is 40.

The square root of 397759 is about 630.6813775592. The cubic root of 397759 is about 73.5427736282.

It can be divided in two parts, 397 and 759, that added together give a square (1156 = 34²).

The spelling of 397759 in words is "three hundred ninety-seven thousand, seven hundred fifty-nine".