4783721 has 2 divisors, whose sum is σ = 4783722. Its totient is φ = 4783720.

The previous prime is 4783717. The next prime is 4783729. The reversal of 4783721 is 1273874.

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., 4044121 + 739600 = 2011^2 + 860^2 .

It is a cyclic number.

It is not a de Polignac number, because 4783721 - 2² = 4783717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4783729) 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 as a sum of consecutive naturals, namely, 2391860 + 2391861.

It is an arithmetic number, because the mean of its divisors is an integer number (2391861).

Almost surely, 2^4783721 is an apocalyptic number.

It is an amenable number.

4783721 is a deficient number, since it is larger than the sum of its proper divisors (1).

4783721 is an equidigital number, since it uses as much as digits as its factorization.

4783721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 32.

The square root of 4783721 is about 2187.1719182543. The cubic root of 4783721 is about 168.4956192893.

The spelling of 4783721 in words is "four million, seven hundred eighty-three thousand, seven hundred twenty-one".