918998347 has 2 divisors, whose sum is σ = 918998348. Its totient is φ = 918998346.

The previous prime is 918998321. The next prime is 918998363. The reversal of 918998347 is 743899819.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-918998347 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 918998291 and 918998300.

It is not a weakly prime, because it can be changed into another prime (918998447) 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, 459499173 + 459499174.

It is an arithmetic number, because the mean of its divisors is an integer number (459499174).

Almost surely, 2^918998347 is an apocalyptic number.

918998347 is a deficient number, since it is larger than the sum of its proper divisors (1).

918998347 is an equidigital number, since it uses as much as digits as its factorization.

918998347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 58.

The square root of 918998347 is about 30314.9855187166. The cubic root of 918998347 is about 972.2357282903.

The spelling of 918998347 in words is "nine hundred eighteen million, nine hundred ninety-eight thousand, three hundred forty-seven".