404422031 has 4 divisors (see below), whose sum is σ = 435531432. Its totient is φ = 373312632.

The previous prime is 404422013. The next prime is 404422033. The reversal of 404422031 is 130224404.

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 404422031 - 2⁶ = 404421967 is a prime.

It is a super-2 number, since 2×404422031² = 327114358316329922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404421994 and 404422012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404422033) 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 in 3 ways as a sum of consecutive naturals, for example, 15554681 + ... + 15554706.

It is an arithmetic number, because the mean of its divisors is an integer number (108882858).

Almost surely, 2^404422031 is an apocalyptic number.

404422031 is a deficient number, since it is larger than the sum of its proper divisors (31109401).

404422031 is a wasteful number, since it uses less digits than its factorization.

404422031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31109400.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 404422031 is about 20110.2469154409. The cubic root of 404422031 is about 739.5115055789.

Adding to 404422031 its reverse (130224404), we get a palindrome (534646435).

The spelling of 404422031 in words is "four hundred four million, four hundred twenty-two thousand, thirty-one".