400403022 has 16 divisors (see below), whose sum is σ = 815916240. Its totient is φ = 130949312.

The previous prime is 400402999. The next prime is 400403027. The reversal of 400403022 is 220304004.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 400402992 and 400403010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400403027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 629247 + ... + 629882.

It is an arithmetic number, because the mean of its divisors is an integer number (50994765).

Almost surely, 2^400403022 is an apocalyptic number.

400403022 is an abundant number, since it is smaller than the sum of its proper divisors (415513218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400403022 is a wasteful number, since it uses less digits than its factorization.

400403022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259187.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 400403022 is about 20010.0730133600. The cubic root of 400403022 is about 737.0536742893.

Adding to 400403022 its reverse (220304004), we get a palindrome (620707026).

The spelling of 400403022 in words is "four hundred million, four hundred three thousand, twenty-two".