401868317 has 2 divisors, whose sum is σ = 401868318. Its totient is φ = 401868316.

The previous prime is 401868301. The next prime is 401868349. The reversal of 401868317 is 713868104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261824761 + 140043556 = 16181^2 + 11834^2 .

It is a cyclic number.

It is not a de Polignac number, because 401868317 - 2⁴ = 401868301 is a prime.

It is a super-2 number, since 2×401868317² = 322996288416824978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401868367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200934158 + 200934159.

It is an arithmetic number, because the mean of its divisors is an integer number (200934159).

Almost surely, 2^401868317 is an apocalyptic number.

It is an amenable number.

401868317 is a deficient number, since it is larger than the sum of its proper divisors (1).

401868317 is an equidigital number, since it uses as much as digits as its factorization.

401868317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 401868317 is about 20046.6535112472. The cubic root of 401868317 is about 737.9516747513.

The spelling of 401868317 in words is "four hundred one million, eight hundred sixty-eight thousand, three hundred seventeen".