39898236089 has 2 divisors, whose sum is σ = 39898236090. Its totient is φ = 39898236088.

The previous prime is 39898236061. The next prime is 39898236101. The reversal of 39898236089 is 98063289893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20769133225 + 19129102864 = 144115^2 + 138308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39898236089 is a prime.

It is not a weakly prime, because it can be changed into another prime (39898236029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19949118044 + 19949118045.

It is an arithmetic number, because the mean of its divisors is an integer number (19949118045).

Almost surely, 2^39898236089 is an apocalyptic number.

It is an amenable number.

39898236089 is a deficient number, since it is larger than the sum of its proper divisors (1).

39898236089 is an equidigital number, since it uses as much as digits as its factorization.

39898236089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40310784, while the sum is 65.

The spelling of 39898236089 in words is "thirty-nine billion, eight hundred ninety-eight million, two hundred thirty-six thousand, eighty-nine".