400448422 has 16 divisors (see below), whose sum is σ = 670519872. Its totient is φ = 177788520.

The previous prime is 400448387. The next prime is 400448429. The reversal of 400448422 is 224844004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400448429) by changing a digit.

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, 210708 + ... + 212599.

It is an arithmetic number, because the mean of its divisors is an integer number (41907492).

Almost surely, 2^400448422 is an apocalyptic number.

400448422 is a deficient number, since it is larger than the sum of its proper divisors (270071450).

400448422 is a wasteful number, since it uses less digits than its factorization.

400448422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423363.

The product of its (nonzero) digits is 8192, while the sum is 28.

The square root of 400448422 is about 20011.2074098491. The cubic root of 400448422 is about 737.0815303662.

The spelling of 400448422 in words is "four hundred million, four hundred forty-eight thousand, four hundred twenty-two".