842823837 has 6 divisors (see below), whose sum is σ = 1217412222. Its totient is φ = 561882552.

The previous prime is 842823833. The next prime is 842823847. The reversal of 842823837 is 738328248.

It can be written as a sum of positive squares in only one way, i.e., 754820676 + 88003161 = 27474^2 + 9381^2 .

It is not a de Polignac number, because 842823837 - 2² = 842823833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 842823792 and 842823801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842823833) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46823538 + ... + 46823555.

It is an arithmetic number, because the mean of its divisors is an integer number (202902037).

Almost surely, 2^842823837 is an apocalyptic number.

It is an amenable number.

842823837 is a deficient number, since it is larger than the sum of its proper divisors (374588385).

842823837 is a wasteful number, since it uses less digits than its factorization.

842823837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93647099 (or 93647096 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 842823837 is about 29031.4284354043. The cubic root of 842823837 is about 944.5949149838.

The spelling of 842823837 in words is "eight hundred forty-two million, eight hundred twenty-three thousand, eight hundred thirty-seven".