404422351 has 2 divisors, whose sum is σ = 404422352. Its totient is φ = 404422350.

The previous prime is 404422349. The next prime is 404422379. The reversal of 404422351 is 153224404.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404422351 - 2¹ = 404422349 is a prime.

Together with 404422349, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404402351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202211175 + 202211176.

It is an arithmetic number, because the mean of its divisors is an integer number (202211176).

Almost surely, 2^404422351 is an apocalyptic number.

404422351 is a deficient number, since it is larger than the sum of its proper divisors (1).

404422351 is an equidigital number, since it uses as much as digits as its factorization.

404422351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 404422351 is about 20110.2548715823. The cubic root of 404422351 is about 739.5117006257.

Adding to 404422351 its reverse (153224404), we get a palindrome (557646755).

The spelling of 404422351 in words is "four hundred four million, four hundred twenty-two thousand, three hundred fifty-one".