12409498889 has 2 divisors, whose sum is σ = 12409498890. Its totient is φ = 12409498888.

The previous prime is 12409498883. The next prime is 12409498903. The reversal of 12409498889 is 98889490421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12408846025 + 652864 = 111395^2 + 808^2 .

It is a cyclic number.

It is not a de Polignac number, because 12409498889 - 2⁴ = 12409498873 is a prime.

It is not a weakly prime, because it can be changed into another prime (12409498883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6204749444 + 6204749445.

It is an arithmetic number, because the mean of its divisors is an integer number (6204749445).

Almost surely, 2^12409498889 is an apocalyptic number.

It is an amenable number.

12409498889 is a deficient number, since it is larger than the sum of its proper divisors (1).

12409498889 is an equidigital number, since it uses as much as digits as its factorization.

12409498889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11943936, while the sum is 62.

The spelling of 12409498889 in words is "twelve billion, four hundred nine million, four hundred ninety-eight thousand, eight hundred eighty-nine".