4991293 has 2 divisors, whose sum is σ = 4991294. Its totient is φ = 4991292.

The previous prime is 4991291. The next prime is 4991297. The reversal of 4991293 is 3921994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2762244 + 2229049 = 1662^2 + 1493^2 .

It is a cyclic number.

It is not a de Polignac number, because 4991293 - 2¹ = 4991291 is a prime.

Together with 4991291, it forms a pair of twin primes.

4991293 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4991291) 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 as a sum of consecutive naturals, namely, 2495646 + 2495647.

It is an arithmetic number, because the mean of its divisors is an integer number (2495647).

Almost surely, 2^4991293 is an apocalyptic number.

It is an amenable number.

4991293 is a deficient number, since it is larger than the sum of its proper divisors (1).

4991293 is an equidigital number, since it uses as much as digits as its factorization.

4991293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 37.

The square root of 4991293 is about 2234.1201847707. The cubic root of 4991293 is about 170.8982785919.

It can be divided in two parts, 49912 and 93, that added together give a palindrome (50005).

The spelling of 4991293 in words is "four million, nine hundred ninety-one thousand, two hundred ninety-three".