916447331 has 2 divisors, whose sum is σ = 916447332. Its totient is φ = 916447330.

The previous prime is 916447309. The next prime is 916447417. The reversal of 916447331 is 133744619.

It is a weak prime.

It is an emirp because it is prime and its reverse (133744619) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 916447331 - 2²⁶ = 849338467 is a prime.

It is a super-2 number, since 2×916447331² = 1679751420994047122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (916647331) 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, 458223665 + 458223666.

It is an arithmetic number, because the mean of its divisors is an integer number (458223666).

Almost surely, 2^916447331 is an apocalyptic number.

916447331 is a deficient number, since it is larger than the sum of its proper divisors (1).

916447331 is an equidigital number, since it uses as much as digits as its factorization.

916447331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 916447331 is about 30272.8811149517. The cubic root of 916447331 is about 971.3352960089.

The spelling of 916447331 in words is "nine hundred sixteen million, four hundred forty-seven thousand, three hundred thirty-one".