404430071 has 2 divisors, whose sum is σ = 404430072. Its totient is φ = 404430070.

The previous prime is 404430049. The next prime is 404430077. The reversal of 404430071 is 170034404.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404430071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404430077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202215035 + 202215036.

It is an arithmetic number, because the mean of its divisors is an integer number (202215036).

Almost surely, 2^404430071 is an apocalyptic number.

404430071 is a deficient number, since it is larger than the sum of its proper divisors (1).

404430071 is an equidigital number, since it uses as much as digits as its factorization.

404430071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 404430071 is about 20110.4468125400. The cubic root of 404430071 is about 739.5164060976.

Adding to 404430071 its reverse (170034404), we get a palindrome (574464475).

The spelling of 404430071 in words is "four hundred four million, four hundred thirty thousand, seventy-one".