401266319 has 2 divisors, whose sum is σ = 401266320. Its totient is φ = 401266318.

The previous prime is 401266247. The next prime is 401266331. The reversal of 401266319 is 913662104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401266319 is a prime.

It is a super-2 number, since 2×401266319² = 322029317527619522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401266519) 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, 200633159 + 200633160.

It is an arithmetic number, because the mean of its divisors is an integer number (200633160).

Almost surely, 2^401266319 is an apocalyptic number.

401266319 is a deficient number, since it is larger than the sum of its proper divisors (1).

401266319 is an equidigital number, since it uses as much as digits as its factorization.

401266319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 401266319 is about 20031.6329588978. The cubic root of 401266319 is about 737.5830071848.

The spelling of 401266319 in words is "four hundred one million, two hundred sixty-six thousand, three hundred nineteen".