400054163 has 16 divisors (see below), whose sum is σ = 419328000. Its totient is φ = 381227040.

The previous prime is 400054153. The next prime is 400054169. The reversal of 400054163 is 361450004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 400054163 - 2⁴ = 400054147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400054169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1114178 + ... + 1114536.

It is an arithmetic number, because the mean of its divisors is an integer number (26208000).

Almost surely, 2^400054163 is an apocalyptic number.

400054163 is a deficient number, since it is larger than the sum of its proper divisors (19273837).

400054163 is a wasteful number, since it uses less digits than its factorization.

400054163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 400054163 is about 20001.3540291651. The cubic root of 400054163 is about 736.8395545935.

The spelling of 400054163 in words is "four hundred million, fifty-four thousand, one hundred sixty-three".