397048261 has 2 divisors, whose sum is σ = 397048262. Its totient is φ = 397048260.

The previous prime is 397048247. The next prime is 397048303. The reversal of 397048261 is 162840793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 361228036 + 35820225 = 19006^2 + 5985^2 .

It is a cyclic number.

It is not a de Polignac number, because 397048261 - 2¹³ = 397040069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397048061) 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, 198524130 + 198524131.

It is an arithmetic number, because the mean of its divisors is an integer number (198524131).

Almost surely, 2^397048261 is an apocalyptic number.

It is an amenable number.

397048261 is a deficient number, since it is larger than the sum of its proper divisors (1).

397048261 is an equidigital number, since it uses as much as digits as its factorization.

397048261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 397048261 is about 19926.0698834467. The cubic root of 397048261 is about 734.9894400507.

The spelling of 397048261 in words is "three hundred ninety-seven million, forty-eight thousand, two hundred sixty-one".