400403222 has 8 divisors (see below), whose sum is σ = 609064272. Its totient is φ = 197381800.

The previous prime is 400403221. The next prime is 400403231. The reversal of 400403222 is 222304004.

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 400403222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400403221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1409729 + ... + 1410012.

It is an arithmetic number, because the mean of its divisors is an integer number (76133034).

Almost surely, 2^400403222 is an apocalyptic number.

400403222 is a deficient number, since it is larger than the sum of its proper divisors (208661050).

400403222 is a wasteful number, since it uses less digits than its factorization.

400403222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819814.

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

The square root of 400403222 is about 20010.0780108424. The cubic root of 400403222 is about 737.0537970079.

Adding to 400403222 its reverse (222304004), we get a palindrome (622707226).

The spelling of 400403222 in words is "four hundred million, four hundred three thousand, two hundred twenty-two".