4891747 has 4 divisors (see below), whose sum is σ = 5590576. Its totient is φ = 4192920.

The previous prime is 4891729. The next prime is 4891763. The reversal of 4891747 is 7471984.

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-4891747 is a prime.

It is an Ulam number.

It is a Duffinian number.

4891747 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4891717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349404 + ... + 349417.

It is an arithmetic number, because the mean of its divisors is an integer number (1397644).

Almost surely, 2^4891747 is an apocalyptic number.

4891747 is a deficient number, since it is larger than the sum of its proper divisors (698829).

4891747 is an equidigital number, since it uses as much as digits as its factorization.

4891747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698828.

The product of its digits is 56448, while the sum is 40.

The square root of 4891747 is about 2211.7294138298. The cubic root of 4891747 is about 169.7545130361.

The spelling of 4891747 in words is "four million, eight hundred ninety-one thousand, seven hundred forty-seven".