400422424 has 16 divisors (see below), whose sum is σ = 751093200. Its totient is φ = 200130912.

The previous prime is 400422409. The next prime is 400422457. The reversal of 400422424 is 424224004.

It is a junction number, because it is equal to n+sod(n) for n = 400422395 and 400422404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14757 + ... + 31915.

It is an arithmetic number, because the mean of its divisors is an integer number (46943325).

Almost surely, 2^400422424 is an apocalyptic number.

It is an amenable number.

400422424 is a deficient number, since it is larger than the sum of its proper divisors (350670776).

400422424 is a wasteful number, since it uses less digits than its factorization.

400422424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20082 (or 20078 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 400422424 is about 20010.5578133145. The cubic root of 400422424 is about 737.0655790316.

Adding to 400422424 its reverse (424224004), we get a palindrome (824646428).

The spelling of 400422424 in words is "four hundred million, four hundred twenty-two thousand, four hundred twenty-four".