5209866 has 16 divisors (see below), whose sum is σ = 11577600. Its totient is φ = 1736604.

The previous prime is 5209861. The next prime is 5209889. The reversal of 5209866 is 6689025.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 5209866.

It is not an unprimeable number, because it can be changed into a prime (5209861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48186 + ... + 48293.

It is an arithmetic number, because the mean of its divisors is an integer number (723600).

Almost surely, 2^5209866 is an apocalyptic number.

5209866 is an abundant number, since it is smaller than the sum of its proper divisors (6367734).

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

5209866 is a wasteful number, since it uses less digits than its factorization.

5209866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96490 (or 96484 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 5209866 is about 2282.5130886810. The cubic root of 5209866 is about 173.3573199875.

The spelling of 5209866 in words is "five million, two hundred nine thousand, eight hundred sixty-six".