401401019 has 2 divisors, whose sum is σ = 401401020. Its totient is φ = 401401018.

The previous prime is 401400949. The next prime is 401401027. The reversal of 401401019 is 910104104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401401019 - 2¹² = 401396923 is a prime.

It is a super-2 number, since 2×401401019² = 322245556108476722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (401401069) 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, 200700509 + 200700510.

It is an arithmetic number, because the mean of its divisors is an integer number (200700510).

Almost surely, 2^401401019 is an apocalyptic number.

401401019 is a deficient number, since it is larger than the sum of its proper divisors (1).

401401019 is an equidigital number, since it uses as much as digits as its factorization.

401401019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 401401019 is about 20034.9948589961. The cubic root of 401401019 is about 737.6655303632.

The spelling of 401401019 in words is "four hundred one million, four hundred one thousand, nineteen".