916823449 has 2 divisors, whose sum is σ = 916823450. Its totient is φ = 916823448.

The previous prime is 916823423. The next prime is 916823461. The reversal of 916823449 is 944328619.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 597558025 + 319265424 = 24445^2 + 17868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-916823449 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 916823399 and 916823408.

It is not a weakly prime, because it can be changed into another prime (916823849) 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, 458411724 + 458411725.

It is an arithmetic number, because the mean of its divisors is an integer number (458411725).

Almost surely, 2^916823449 is an apocalyptic number.

It is an amenable number.

916823449 is a deficient number, since it is larger than the sum of its proper divisors (1).

916823449 is an equidigital number, since it uses as much as digits as its factorization.

916823449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 46.

The square root of 916823449 is about 30279.0926052945. The cubic root of 916823449 is about 971.4681593347.

The spelling of 916823449 in words is "nine hundred sixteen million, eight hundred twenty-three thousand, four hundred forty-nine".