4090820866 has 16 divisors (see below), whose sum is σ = 6785772768. Its totient is φ = 1833991200.

The previous prime is 4090820849. The next prime is 4090820893. The reversal of 4090820866 is 6680280904.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1272000 + ... + 1275211.

It is an arithmetic number, because the mean of its divisors is an integer number (424110798).

Almost surely, 2^4090820866 is an apocalyptic number.

4090820866 is a deficient number, since it is larger than the sum of its proper divisors (2694951902).

4090820866 is a wasteful number, since it uses less digits than its factorization.

4090820866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547297.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 4090820866 is about 63959.5252171246. The cubic root of 4090820866 is about 1599.3253491626.

The spelling of 4090820866 in words is "four billion, ninety million, eight hundred twenty thousand, eight hundred sixty-six".