4991493 has 16 divisors (see below), whose sum is σ = 7229376. Its totient is φ = 3045120.

The previous prime is 4991491. The next prime is 4991507. The reversal of 4991493 is 3941994.

It is not a de Polignac number, because 4991493 - 2¹ = 4991491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4991491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4621 + ... + 5597.

It is an arithmetic number, because the mean of its divisors is an integer number (451836).

Almost surely, 2^4991493 is an apocalyptic number.

It is an amenable number.

4991493 is a deficient number, since it is larger than the sum of its proper divisors (2237883).

4991493 is a wasteful number, since it uses less digits than its factorization.

4991493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124.

The product of its digits is 34992, while the sum is 39.

The square root of 4991493 is about 2234.1649446717. The cubic root of 4991493 is about 170.9005611801.

The spelling of 4991493 in words is "four million, nine hundred ninety-one thousand, four hundred ninety-three".