400620422 has 16 divisors (see below), whose sum is σ = 618699840. Its totient is φ = 194444712.

The previous prime is 400620397. The next prime is 400620431. The reversal of 400620422 is 224026004.

It is a junction number, because it is equal to n+sod(n) for n = 400620394 and 400620403.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 272 + ... + 28307.

It is an arithmetic number, because the mean of its divisors is an integer number (38668740).

Almost surely, 2^400620422 is an apocalyptic number.

400620422 is a deficient number, since it is larger than the sum of its proper divisors (218079418).

400620422 is a wasteful number, since it uses less digits than its factorization.

400620422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28787.

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

The square root of 400620422 is about 20015.5045402308. The cubic root of 400620422 is about 737.1870453085.

Adding to 400620422 its reverse (224026004), we get a palindrome (624646426).

The spelling of 400620422 in words is "four hundred million, six hundred twenty thousand, four hundred twenty-two".