842367997 has 2 divisors, whose sum is σ = 842367998. Its totient is φ = 842367996.

The previous prime is 842367989. The next prime is 842368057. The reversal of 842367997 is 799763248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 586559961 + 255808036 = 24219^2 + 15994^2 .

It is a cyclic number.

It is not a de Polignac number, because 842367997 - 2³ = 842367989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (842367397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421183998 + 421183999.

It is an arithmetic number, because the mean of its divisors is an integer number (421183999).

Almost surely, 2^842367997 is an apocalyptic number.

It is an amenable number.

842367997 is a deficient number, since it is larger than the sum of its proper divisors (1).

842367997 is an equidigital number, since it uses as much as digits as its factorization.

842367997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 55.

The square root of 842367997 is about 29023.5765714703. The cubic root of 842367997 is about 944.4245900289.

The spelling of 842367997 in words is "eight hundred forty-two million, three hundred sixty-seven thousand, nine hundred ninety-seven".