4686991 has 6 divisors (see below), whose sum is σ = 4753392. Its totient is φ = 4621500.

The previous prime is 4686989. The next prime is 4687003. The reversal of 4686991 is 1996864.

It is not a de Polignac number, because 4686991 - 2¹ = 4686989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4686911) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 5866 + ... + 6616.

It is an arithmetic number, because the mean of its divisors is an integer number (792232).

Almost surely, 2^4686991 is an apocalyptic number.

4686991 is a deficient number, since it is larger than the sum of its proper divisors (66401).

4686991 is an frugal number, since it uses more digits than its factorization.

4686991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909 (or 830 counting only the distinct ones).

The product of its digits is 93312, while the sum is 43.

The square root of 4686991 is about 2164.9459577551. The cubic root of 4686991 is about 167.3521796769.

The spelling of 4686991 in words is "four million, six hundred eighty-six thousand, nine hundred ninety-one".