400535066 has 32 divisors (see below), whose sum is σ = 649036800. Its totient is φ = 184947840.

The previous prime is 400535063. The next prime is 400535071. The reversal of 400535066 is 660535004.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400535063) 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, 158771 + ... + 161273.

It is an arithmetic number, because the mean of its divisors is an integer number (20282400).

Almost surely, 2^400535066 is an apocalyptic number.

400535066 is a deficient number, since it is larger than the sum of its proper divisors (248501734).

400535066 is a wasteful number, since it uses less digits than its factorization.

400535066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2654.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 400535066 is about 20013.3721796203. The cubic root of 400535066 is about 737.1346866806.

The spelling of 400535066 in words is "four hundred million, five hundred thirty-five thousand, sixty-six".