401868263 has 2 divisors, whose sum is σ = 401868264. Its totient is φ = 401868262.

The previous prime is 401868251. The next prime is 401868281. The reversal of 401868263 is 362868104.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401868263 - 2¹² = 401864167 is a prime.

It is a super-2 number, since 2×401868263² = 322996201613274338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401868163) 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, 200934131 + 200934132.

It is an arithmetic number, because the mean of its divisors is an integer number (200934132).

Almost surely, 2^401868263 is an apocalyptic number.

401868263 is a deficient number, since it is larger than the sum of its proper divisors (1).

401868263 is an equidigital number, since it uses as much as digits as its factorization.

401868263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 401868263 is about 20046.6521643889. The cubic root of 401868263 is about 737.9516416978.

The spelling of 401868263 in words is "four hundred one million, eight hundred sixty-eight thousand, two hundred sixty-three".