404422427 has 2 divisors, whose sum is σ = 404422428. Its totient is φ = 404422426.

The previous prime is 404422399. The next prime is 404422463. The reversal of 404422427 is 724224404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404422427 - 2¹⁴ = 404406043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404422427.

It is not a weakly prime, because it can be changed into another prime (404422127) 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, 202211213 + 202211214.

It is an arithmetic number, because the mean of its divisors is an integer number (202211214).

Almost surely, 2^404422427 is an apocalyptic number.

404422427 is a deficient number, since it is larger than the sum of its proper divisors (1).

404422427 is an equidigital number, since it uses as much as digits as its factorization.

404422427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14336, while the sum is 29.

The square root of 404422427 is about 20110.2567611654. The cubic root of 404422427 is about 739.5117469493.

The spelling of 404422427 in words is "four hundred four million, four hundred twenty-two thousand, four hundred twenty-seven".