4909493 has 4 divisors (see below), whose sum is σ = 5042220. Its totient is φ = 4776768.

The previous prime is 4909483. The next prime is 4909523. The reversal of 4909493 is 3949094.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3949094 = 2 ⋅1974547.

It can be written as a sum of positive squares in 2 ways, for example, as 2093809 + 2815684 = 1447^2 + 1678^2 .

It is a cyclic number.

It is not a de Polignac number, because 4909493 - 2⁴ = 4909477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4909403) 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, 66308 + ... + 66381.

It is an arithmetic number, because the mean of its divisors is an integer number (1260555).

Almost surely, 2^4909493 is an apocalyptic number.

It is an amenable number.

4909493 is a deficient number, since it is larger than the sum of its proper divisors (132727).

4909493 is a wasteful number, since it uses less digits than its factorization.

4909493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132726.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 4909493 is about 2215.7375747141. The cubic root of 4909493 is about 169.9595405446.

The spelling of 4909493 in words is "four million, nine hundred nine thousand, four hundred ninety-three".