397026347441 has 2 divisors, whose sum is σ = 397026347442. Its totient is φ = 397026347440.

The previous prime is 397026347437. The next prime is 397026347449. The reversal of 397026347441 is 144743620793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 364411432225 + 32614915216 = 603665^2 + 180596^2 .

It is an emirp because it is prime and its reverse (144743620793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 397026347441 - 2² = 397026347437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 397026347441.

It is not a weakly prime, because it can be changed into another prime (397026347449) 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, 198513173720 + 198513173721.

It is an arithmetic number, because the mean of its divisors is an integer number (198513173721).

Almost surely, 2^397026347441 is an apocalyptic number.

It is an amenable number.

397026347441 is a deficient number, since it is larger than the sum of its proper divisors (1).

397026347441 is an equidigital number, since it uses as much as digits as its factorization.

397026347441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 50.

The spelling of 397026347441 in words is "three hundred ninety-seven billion, twenty-six million, three hundred forty-seven thousand, four hundred forty-one".