1022397797 has 2 divisors, whose sum is σ = 1022397798. Its totient is φ = 1022397796.

The previous prime is 1022397791. The next prime is 1022397829. The reversal of 1022397797 is 7977932201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 934769476 + 87628321 = 30574^2 + 9361^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022397797 - 2⁴ = 1022397781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022397791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511198898 + 511198899.

It is an arithmetic number, because the mean of its divisors is an integer number (511198899).

Almost surely, 2^1022397797 is an apocalyptic number.

It is an amenable number.

1022397797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022397797 is an equidigital number, since it uses as much as digits as its factorization.

1022397797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 333396, while the sum is 47.

The square root of 1022397797 is about 31974.9557779209. The cubic root of 1022397797 is about 1007.4108755853.

The spelling of 1022397797 in words is "one billion, twenty-two million, three hundred ninety-seven thousand, seven hundred ninety-seven".