400930222 has 16 divisors (see below), whose sum is σ = 749791872. Its totient is φ = 156206520.

The previous prime is 400930219. The next prime is 400930253. The reversal of 400930222 is 222039004.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 400930193 and 400930202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1301568 + ... + 1301875.

It is an arithmetic number, because the mean of its divisors is an integer number (46861992).

Almost surely, 2^400930222 is an apocalyptic number.

400930222 is a deficient number, since it is larger than the sum of its proper divisors (348861650).

400930222 is a wasteful number, since it uses less digits than its factorization.

400930222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2603463.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 400930222 is about 20023.2420451834. The cubic root of 400930222 is about 737.3770187351.

Adding to 400930222 its reverse (222039004), we get a palindrome (622969226).

The spelling of 400930222 in words is "four hundred million, nine hundred thirty thousand, two hundred twenty-two".