404222351 has 4 divisors (see below), whose sum is σ = 435316392. Its totient is φ = 373128312.

The previous prime is 404222347. The next prime is 404222363. The reversal of 404222351 is 153222404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 404222351 - 2² = 404222347 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404222341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15547001 + ... + 15547026.

It is an arithmetic number, because the mean of its divisors is an integer number (108829098).

Almost surely, 2^404222351 is an apocalyptic number.

404222351 is a deficient number, since it is larger than the sum of its proper divisors (31094041).

404222351 is a wasteful number, since it uses less digits than its factorization.

404222351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31094040.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 404222351 is about 20105.2816692530. The cubic root of 404222351 is about 739.3897763327.

Adding to 404222351 its reverse (153222404), we get a palindrome (557444755).

The spelling of 404222351 in words is "four hundred four million, two hundred twenty-two thousand, three hundred fifty-one".