400550163 has 16 divisors (see below), whose sum is σ = 593703936. Its totient is φ = 238540320.

The previous prime is 400550119. The next prime is 400550201. The reversal of 400550163 is 361055004.

It is not a de Polignac number, because 400550163 - 2⁶ = 400550099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400550063) 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 15 ways as a sum of consecutive naturals, for example, 164445 + ... + 166862.

It is an arithmetic number, because the mean of its divisors is an integer number (37106496).

Almost surely, 2^400550163 is an apocalyptic number.

400550163 is a deficient number, since it is larger than the sum of its proper divisors (193153773).

400550163 is a wasteful number, since it uses less digits than its factorization.

400550163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331354.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 400550163 is about 20013.7493488851. The cubic root of 400550163 is about 737.1439479443.

The spelling of 400550163 in words is "four hundred million, five hundred fifty thousand, one hundred sixty-three".