4891387 has 4 divisors (see below), whose sum is σ = 5104080. Its totient is φ = 4678696.

The previous prime is 4891361. The next prime is 4891399. The reversal of 4891387 is 7831984.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4891387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4891307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106312 + ... + 106357.

It is an arithmetic number, because the mean of its divisors is an integer number (1276020).

Almost surely, 2^4891387 is an apocalyptic number.

4891387 is a deficient number, since it is larger than the sum of its proper divisors (212693).

4891387 is a wasteful number, since it uses less digits than its factorization.

4891387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212692.

The product of its digits is 48384, while the sum is 40.

The square root of 4891387 is about 2211.6480280551. The cubic root of 4891387 is about 169.7503486668.

The spelling of 4891387 in words is "four million, eight hundred ninety-one thousand, three hundred eighty-seven".