823042867 has 2 divisors, whose sum is σ = 823042868. Its totient is φ = 823042866.

The previous prime is 823042849. The next prime is 823042873. The reversal of 823042867 is 768240328.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 823042867 - 2²³ = 814654259 is a prime.

It is not a weakly prime, because it can be changed into another prime (823042667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411521433 + 411521434.

It is an arithmetic number, because the mean of its divisors is an integer number (411521434).

Almost surely, 2^823042867 is an apocalyptic number.

823042867 is a deficient number, since it is larger than the sum of its proper divisors (1).

823042867 is an equidigital number, since it uses as much as digits as its factorization.

823042867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 823042867 is about 28688.7236906768. The cubic root of 823042867 is about 937.1464947968.

The spelling of 823042867 in words is "eight hundred twenty-three million, forty-two thousand, eight hundred sixty-seven".