400461285 has 32 divisors (see below), whose sum is σ = 740517120. Its totient is φ = 181006848.

The previous prime is 400461251. The next prime is 400461289. The reversal of 400461285 is 582164004.

It is not a de Polignac number, because 400461285 - 2¹⁷ = 400330213 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400461289) 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 31 ways as a sum of consecutive naturals, for example, 12082 + ... + 30771.

It is an arithmetic number, because the mean of its divisors is an integer number (23141160).

Almost surely, 2^400461285 is an apocalyptic number.

It is an amenable number.

400461285 is a deficient number, since it is larger than the sum of its proper divisors (340055835).

400461285 is a wasteful number, since it uses less digits than its factorization.

400461285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42957.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 400461285 is about 20011.5288021680. The cubic root of 400461285 is about 737.0894223341.

The spelling of 400461285 in words is "four hundred million, four hundred sixty-one thousand, two hundred eighty-five".