8490917459 has 2 divisors, whose sum is σ = 8490917460. Its totient is φ = 8490917458.

The previous prime is 8490917431. The next prime is 8490917503. The reversal of 8490917459 is 9547190948.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8490917459 is a prime.

It is not a weakly prime, because it can be changed into another prime (8490917759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4245458729 + 4245458730.

It is an arithmetic number, because the mean of its divisors is an integer number (4245458730).

Almost surely, 2^8490917459 is an apocalyptic number.

8490917459 is a deficient number, since it is larger than the sum of its proper divisors (1).

8490917459 is an equidigital number, since it uses as much as digits as its factorization.

8490917459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The square root of 8490917459 is about 92146.1744132658. The cubic root of 8490917459 is about 2040.1003938642.

The spelling of 8490917459 in words is "eight billion, four hundred ninety million, nine hundred seventeen thousand, four hundred fifty-nine".