842894653 has 2 divisors, whose sum is σ = 842894654. Its totient is φ = 842894652.

The previous prime is 842894621. The next prime is 842894659. The reversal of 842894653 is 356498248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 496264729 + 346629924 = 22277^2 + 18618^2 .

It is a cyclic number.

It is not a de Polignac number, because 842894653 - 2⁵ = 842894621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 842894597 and 842894606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (842894659) 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, 421447326 + 421447327.

It is an arithmetic number, because the mean of its divisors is an integer number (421447327).

Almost surely, 2^842894653 is an apocalyptic number.

It is an amenable number.

842894653 is a deficient number, since it is larger than the sum of its proper divisors (1).

842894653 is an equidigital number, since it uses as much as digits as its factorization.

842894653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1658880, while the sum is 49.

The square root of 842894653 is about 29032.6480535276. The cubic root of 842894653 is about 944.6213699231.

The spelling of 842894653 in words is "eight hundred forty-two million, eight hundred ninety-four thousand, six hundred fifty-three".