8917574489 has 2 divisors, whose sum is σ = 8917574490. Its totient is φ = 8917574488.

The previous prime is 8917574461. The next prime is 8917574537. The reversal of 8917574489 is 9844757198.

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., 7403742025 + 1513832464 = 86045^2 + 38908^2 .

It is a cyclic number.

It is not a de Polignac number, because 8917574489 - 2²⁰ = 8916525913 is a prime.

It is a super-2 number, since 2×8917574489² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8917574459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4458787244 + 4458787245.

It is an arithmetic number, because the mean of its divisors is an integer number (4458787245).

Almost surely, 2^8917574489 is an apocalyptic number.

It is an amenable number.

8917574489 is a deficient number, since it is larger than the sum of its proper divisors (1).

8917574489 is an equidigital number, since it uses as much as digits as its factorization.

8917574489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20321280, while the sum is 62.

The square root of 8917574489 is about 94432.9099890499. The cubic root of 8917574489 is about 2073.7142652919.

The spelling of 8917574489 in words is "eight billion, nine hundred seventeen million, five hundred seventy-four thousand, four hundred eighty-nine".