4280021797 has 2 divisors, whose sum is σ = 4280021798. Its totient is φ = 4280021796.

The previous prime is 4280021737. The next prime is 4280021821. The reversal of 4280021797 is 7971200824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3785448676 + 494573121 = 61526^2 + 22239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4280021797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4280021737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2140010898 + 2140010899.

It is an arithmetic number, because the mean of its divisors is an integer number (2140010899).

Almost surely, 2^4280021797 is an apocalyptic number.

It is an amenable number.

4280021797 is a deficient number, since it is larger than the sum of its proper divisors (1).

4280021797 is an equidigital number, since it uses as much as digits as its factorization.

4280021797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 4280021797 is about 65421.8755234058. The cubic root of 4280021797 is about 1623.6110320693.

The spelling of 4280021797 in words is "four billion, two hundred eighty million, twenty-one thousand, seven hundred ninety-seven".