4991673 has 4 divisors (see below), whose sum is σ = 6655568. Its totient is φ = 3327780.

The previous prime is 4991671. The next prime is 4991677. The reversal of 4991673 is 3761994.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4991673 - 2¹ = 4991671 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4991671) 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 3 ways as a sum of consecutive naturals, for example, 831943 + ... + 831948.

It is an arithmetic number, because the mean of its divisors is an integer number (1663892).

Almost surely, 2^4991673 is an apocalyptic number.

It is an amenable number.

4991673 is a deficient number, since it is larger than the sum of its proper divisors (1663895).

4991673 is a wasteful number, since it uses less digits than its factorization.

4991673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663894.

The product of its digits is 40824, while the sum is 39.

The square root of 4991673 is about 2234.2052278159. The cubic root of 4991673 is about 170.9026154573.

The spelling of 4991673 in words is "four million, nine hundred ninety-one thousand, six hundred seventy-three".