8917849 has 2 divisors, whose sum is σ = 8917850. Its totient is φ = 8917848.

The previous prime is 8917841. The next prime is 8917871. The reversal of 8917849 is 9487198.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6051600 + 2866249 = 2460^2 + 1693^2 .

It is a cyclic number.

It is not a de Polignac number, because 8917849 - 2³ = 8917841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8917799 and 8917808.

It is not a weakly prime, because it can be changed into another prime (8917841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4458924 + 4458925.

It is an arithmetic number, because the mean of its divisors is an integer number (4458925).

Almost surely, 2^8917849 is an apocalyptic number.

It is an amenable number.

8917849 is a deficient number, since it is larger than the sum of its proper divisors (1).

8917849 is an equidigital number, since it uses as much as digits as its factorization.

8917849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 46.

The square root of 8917849 is about 2986.2767788670. The cubic root of 8917849 is about 207.3735543557.

The spelling of 8917849 in words is "eight million, nine hundred seventeen thousand, eight hundred forty-nine".