2405400866 has 48 divisors (see below), whose sum is σ = 4068574272. Its totient is φ = 1065361440.

The previous prime is 2405400793. The next prime is 2405400869. The reversal of 2405400866 is 6680045042.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2405400869) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2141381 + ... + 2142503.

It is an arithmetic number, because the mean of its divisors is an integer number (84761964).

Almost surely, 2^2405400866 is an apocalyptic number.

2405400866 is a deficient number, since it is larger than the sum of its proper divisors (1663173406).

2405400866 is a wasteful number, since it uses less digits than its factorization.

2405400866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367 (or 1356 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 2405400866 is about 49044.8862369972. The cubic root of 2405400866 is about 1339.8694582121.

The spelling of 2405400866 in words is "two billion, four hundred five million, four hundred thousand, eight hundred sixty-six".