401585423 has 2 divisors, whose sum is σ = 401585424. Its totient is φ = 401585422.

The previous prime is 401585381. The next prime is 401585449. The reversal of 401585423 is 324585104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401585423 - 2⁸ = 401585167 is a prime.

It is a super-2 number, since 2×401585423² = 322541703932177858, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401585423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401585453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200792711 + 200792712.

It is an arithmetic number, because the mean of its divisors is an integer number (200792712).

Almost surely, 2^401585423 is an apocalyptic number.

401585423 is a deficient number, since it is larger than the sum of its proper divisors (1).

401585423 is an equidigital number, since it uses as much as digits as its factorization.

401585423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 401585423 is about 20039.5963781709. The cubic root of 401585423 is about 737.7784744788.

The spelling of 401585423 in words is "four hundred one million, five hundred eighty-five thousand, four hundred twenty-three".