400424404022 has 4 divisors (see below), whose sum is σ = 600636606036. Its totient is φ = 200212202010.

The previous prime is 400424404021. The next prime is 400424404043. The reversal of 400424404022 is 220404424004.

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

It is a junction number, because it is equal to n+sod(n) for n = 400424403982 and 400424404000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400424404021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100106101004 + ... + 100106101007.

It is an arithmetic number, because the mean of its divisors is an integer number (150159151509).

Almost surely, 2^400424404022 is an apocalyptic number.

400424404022 is a deficient number, since it is larger than the sum of its proper divisors (200212202014).

400424404022 is a wasteful number, since it uses less digits than its factorization.

400424404022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200212202013.

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 400424404022 its reverse (220404424004), we get a palindrome (620828828026).

The spelling of 400424404022 in words is "four hundred billion, four hundred twenty-four million, four hundred four thousand, twenty-two".