122369809 has 2 divisors, whose sum is σ = 122369810. Its totient is φ = 122369808.

The previous prime is 122369783. The next prime is 122369813. The reversal of 122369809 is 908963221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119574225 + 2795584 = 10935^2 + 1672^2 .

It is a cyclic number.

It is not a de Polignac number, because 122369809 - 2⁵ = 122369777 is a prime.

It is not a weakly prime, because it can be changed into another prime (122369869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61184904 + 61184905.

It is an arithmetic number, because the mean of its divisors is an integer number (61184905).

Almost surely, 2^122369809 is an apocalyptic number.

It is an amenable number.

122369809 is a deficient number, since it is larger than the sum of its proper divisors (1).

122369809 is an equidigital number, since it uses as much as digits as its factorization.

122369809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 122369809 is about 11062.0888172171. The cubic root of 122369809 is about 496.4681900431.

The spelling of 122369809 in words is "one hundred twenty-two million, three hundred sixty-nine thousand, eight hundred nine".