4921913 has 2 divisors, whose sum is σ = 4921914. Its totient is φ = 4921912.

The previous prime is 4921883. The next prime is 4921919. The reversal of 4921913 is 3191294.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4194304 + 727609 = 2048^2 + 853^2 .

It is a cyclic number.

It is not a de Polignac number, because 4921913 - 2⁶ = 4921849 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4921919) 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, 2460956 + 2460957.

It is an arithmetic number, because the mean of its divisors is an integer number (2460957).

Almost surely, 2^4921913 is an apocalyptic number.

It is an amenable number.

4921913 is a deficient number, since it is larger than the sum of its proper divisors (1).

4921913 is an equidigital number, since it uses as much as digits as its factorization.

4921913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 29.

The square root of 4921913 is about 2218.5384828756. The cubic root of 4921913 is about 170.1027406636.

The spelling of 4921913 in words is "four million, nine hundred twenty-one thousand, nine hundred thirteen".