4921493 has 2 divisors, whose sum is σ = 4921494. Its totient is φ = 4921492.

The previous prime is 4921487. The next prime is 4921523. The reversal of 4921493 is 3941294.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4502884 + 418609 = 2122^2 + 647^2 .

It is a cyclic number.

It is not a de Polignac number, because 4921493 - 2⁶ = 4921429 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4921403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2460746 + 2460747.

It is an arithmetic number, because the mean of its divisors is an integer number (2460747).

Almost surely, 2^4921493 is an apocalyptic number.

It is an amenable number.

4921493 is a deficient number, since it is larger than the sum of its proper divisors (1).

4921493 is an equidigital number, since it uses as much as digits as its factorization.

4921493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 32.

The square root of 4921493 is about 2218.4438239451. The cubic root of 4921493 is about 170.0979020854.

The spelling of 4921493 in words is "four million, nine hundred twenty-one thousand, four hundred ninety-three".