9898459057 has 2 divisors, whose sum is σ = 9898459058. Its totient is φ = 9898459056.

The previous prime is 9898459037. The next prime is 9898459093. The reversal of 9898459057 is 7509548989.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8650674081 + 1247784976 = 93009^2 + 35324^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9898459057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9898459057.

It is not a weakly prime, because it can be changed into another prime (9898459007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4949229528 + 4949229529.

It is an arithmetic number, because the mean of its divisors is an integer number (4949229529).

Almost surely, 2^9898459057 is an apocalyptic number.

It is an amenable number.

9898459057 is a deficient number, since it is larger than the sum of its proper divisors (1).

9898459057 is an equidigital number, since it uses as much as digits as its factorization.

9898459057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32659200, while the sum is 64.

The square root of 9898459057 is about 99490.9998793861. Note that the first 3 decimals coincide. The cubic root of 9898459057 is about 2147.1177572532.

The spelling of 9898459057 in words is "nine billion, eight hundred ninety-eight million, four hundred fifty-nine thousand, fifty-seven".