400422 has 16 divisors (see below), whose sum is σ = 873792. Its totient is φ = 121320.

The previous prime is 400417. The next prime is 400429. The reversal of 400422 is 224004.

It is a junction number, because it is equal to n+sod(n) for n = 400398 and 400407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400429) by changing a digit.

400422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2968 + ... + 3099.

It is an arithmetic number, because the mean of its divisors is an integer number (54612).

2⁴⁰⁰⁴²² is an apocalyptic number.

400422 is an abundant number, since it is smaller than the sum of its proper divisors (473370).

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

400422 is a wasteful number, since it uses less digits than its factorization.

400422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6083.

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 400422 is about 632.7890643809. The cubic root of 400422 is about 73.7065318876.

Adding to 400422 its reverse (224004), we get a palindrome (624426).

It can be divided in two parts, 4004 and 22, that multiplied together give a palindrome (88088).

The spelling of 400422 in words is "four hundred thousand, four hundred twenty-two", and thus it is an iban number.