8917085249 has 4 divisors (see below), whose sum is σ = 8926030164. Its totient is φ = 8908140336.

The previous prime is 8917085239. The next prime is 8917085279. The reversal of 8917085249 is 9425807198.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7398580225 + 1518505024 = 86015^2 + 38968^2 .

It is a cyclic number.

It is not a de Polignac number, because 8917085249 - 2³² = 4622117953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8917085249.

It is not an unprimeable number, because it can be changed into a prime (8917085239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4470962 + ... + 4472955.

It is an arithmetic number, because the mean of its divisors is an integer number (2231507541).

Almost surely, 2^8917085249 is an apocalyptic number.

It is an amenable number.

8917085249 is a deficient number, since it is larger than the sum of its proper divisors (8944915).

8917085249 is an equidigital number, since it uses as much as digits as its factorization.

8917085249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8944914.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The square root of 8917085249 is about 94430.3195430366. The cubic root of 8917085249 is about 2073.6763415821.

The spelling of 8917085249 in words is "eight billion, nine hundred seventeen million, eighty-five thousand, two hundred forty-nine".