12098809 has 2 divisors, whose sum is σ = 12098810. Its totient is φ = 12098808.

The previous prime is 12098803. The next prime is 12098831. The reversal of 12098809 is 90889021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11580409 + 518400 = 3403^2 + 720^2 .

It is a cyclic number.

It is not a de Polignac number, because 12098809 - 2⁵ = 12098777 is a prime.

It is not a weakly prime, because it can be changed into another prime (12098803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6049404 + 6049405.

It is an arithmetic number, because the mean of its divisors is an integer number (6049405).

Almost surely, 2^12098809 is an apocalyptic number.

It is an amenable number.

12098809 is a deficient number, since it is larger than the sum of its proper divisors (1).

12098809 is an equidigital number, since it uses as much as digits as its factorization.

12098809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 12098809 is about 3478.3342277590. The cubic root of 12098809 is about 229.5695098156.

The spelling of 12098809 in words is "twelve million, ninety-eight thousand, eight hundred nine".