400560166 has 16 divisors (see below), whose sum is σ = 633188160. Its totient is φ = 189521640.

The previous prime is 400560163. The next prime is 400560169. The reversal of 400560166 is 661065004.

It is an interprime number because it is at equal distance from previous prime (400560163) and next prime (400560169).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400560163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30421 + ... + 41551.

It is an arithmetic number, because the mean of its divisors is an integer number (39574260).

Almost surely, 2^400560166 is an apocalyptic number.

400560166 is a deficient number, since it is larger than the sum of its proper divisors (232627994).

400560166 is a wasteful number, since it uses less digits than its factorization.

400560166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12099.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 400560166 is about 20013.9992505246. Note that the first 3 decimals coincide. The cubic root of 400560166 is about 737.1500841624.

The spelling of 400560166 in words is "four hundred million, five hundred sixty thousand, one hundred sixty-six".