400866333 has 32 divisors (see below), whose sum is σ = 659404800. Its totient is φ = 211544256.

The previous prime is 400866331. The next prime is 400866359. The reversal of 400866333 is 333668004.

It is not a de Polignac number, because 400866333 - 2¹ = 400866331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400866294 and 400866303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400866331) 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 31 ways as a sum of consecutive naturals, for example, 303 + ... + 28316.

It is an arithmetic number, because the mean of its divisors is an integer number (20606400).

Almost surely, 2^400866333 is an apocalyptic number.

It is an amenable number.

400866333 is a deficient number, since it is larger than the sum of its proper divisors (258538467).

400866333 is a wasteful number, since it uses less digits than its factorization.

400866333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28681.

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 400866333 is about 20021.6466106062. The cubic root of 400866333 is about 737.3378491736.

It can be divided in two parts, 4008663 and 33, that added together give a triangular number (4008696 = T₂₈₃₁).

The spelling of 400866333 in words is "four hundred million, eight hundred sixty-six thousand, three hundred thirty-three".