400854460 has 12 divisors (see below), whose sum is σ = 841794408. Its totient is φ = 160341776.

The previous prime is 400854401. The next prime is 400854469. The reversal of 400854460 is 64458004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400854469) 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 3 ways as a sum of consecutive naturals, for example, 10021342 + ... + 10021381.

It is an arithmetic number, because the mean of its divisors is an integer number (70149534).

Almost surely, 2^400854460 is an apocalyptic number.

It is an amenable number.

400854460 is an abundant number, since it is smaller than the sum of its proper divisors (440939948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400854460 is a wasteful number, since it uses less digits than its factorization.

400854460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20042732 (or 20042730 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 400854460 is about 20021.3501043261. The cubic root of 400854460 is about 737.3305695245.

The spelling of 400854460 in words is "four hundred million, eight hundred fifty-four thousand, four hundred sixty".