401945617 has 2 divisors, whose sum is σ = 401945618. Its totient is φ = 401945616.

The previous prime is 401945611. The next prime is 401945623. The reversal of 401945617 is 716549104.

It is a balanced prime because it is at equal distance from previous prime (401945611) and next prime (401945623).

It can be written as a sum of positive squares in only one way, i.e., 277422336 + 124523281 = 16656^2 + 11159^2 .

It is a cyclic number.

It is not a de Polignac number, because 401945617 - 2¹⁹ = 401421329 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (401945611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200972808 + 200972809.

It is an arithmetic number, because the mean of its divisors is an integer number (200972809).

Almost surely, 2^401945617 is an apocalyptic number.

It is an amenable number.

401945617 is a deficient number, since it is larger than the sum of its proper divisors (1).

401945617 is an equidigital number, since it uses as much as digits as its factorization.

401945617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 401945617 is about 20048.5814211380. The cubic root of 401945617 is about 737.9989871046.

The spelling of 401945617 in words is "four hundred one million, nine hundred forty-five thousand, six hundred seventeen".