9896508409 has 2 divisors, whose sum is σ = 9896508410. Its totient is φ = 9896508408.

The previous prime is 9896508341. The next prime is 9896508439. The reversal of 9896508409 is 9048056989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7871238400 + 2025270009 = 88720^2 + 45003^2 .

It is an emirp because it is prime and its reverse (9048056989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9896508409 - 2²⁵ = 9862953977 is a prime.

It is a super-2 number, since 2×9896508409² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9896508439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4948254204 + 4948254205.

It is an arithmetic number, because the mean of its divisors is an integer number (4948254205).

Almost surely, 2^9896508409 is an apocalyptic number.

It is an amenable number.

9896508409 is a deficient number, since it is larger than the sum of its proper divisors (1).

9896508409 is an equidigital number, since it uses as much as digits as its factorization.

9896508409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5598720, while the sum is 58.

The square root of 9896508409 is about 99481.1962583884. The cubic root of 9896508409 is about 2146.9767068100.

The spelling of 9896508409 in words is "nine billion, eight hundred ninety-six million, five hundred eight thousand, four hundred nine".