400320422 has 8 divisors (see below), whose sum is σ = 619851072. Its totient is φ = 193703400.

The previous prime is 400320397. The next prime is 400320461. The reversal of 400320422 is 224023004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 400320422.

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, 3228329 + ... + 3228452.

It is an arithmetic number, because the mean of its divisors is an integer number (77481384).

Almost surely, 2^400320422 is an apocalyptic number.

400320422 is a deficient number, since it is larger than the sum of its proper divisors (219530650).

400320422 is a wasteful number, since it uses less digits than its factorization.

400320422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6456814.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 400320422 is about 20008.0089464194. The cubic root of 400320422 is about 737.0029880082.

Adding to 400320422 its reverse (224023004), we get a palindrome (624343426).

The spelling of 400320422 in words is "four hundred million, three hundred twenty thousand, four hundred twenty-two".