4891806 has 32 divisors (see below), whose sum is σ = 10958880. Its totient is φ = 1617408.

The previous prime is 4891787. The next prime is 4891823. The reversal of 4891806 is 6081984.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8190 + ... + 8766.

It is an arithmetic number, because the mean of its divisors is an integer number (342465).

Almost surely, 2^4891806 is an apocalyptic number.

4891806 is an abundant number, since it is smaller than the sum of its proper divisors (6067074).

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

4891806 is a wasteful number, since it uses less digits than its factorization.

4891806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745 (or 739 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 4891806 is about 2211.7427517684. The cubic root of 4891806 is about 169.7551955105.

The spelling of 4891806 in words is "four million, eight hundred ninety-one thousand, eight hundred six".