121585949 has 2 divisors, whose sum is σ = 121585950. Its totient is φ = 121585948.

The previous prime is 121585913. The next prime is 121585969. The reversal of 121585949 is 949585121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79530724 + 42055225 = 8918^2 + 6485^2 .

It is a cyclic number.

It is not a de Polignac number, because 121585949 - 2²⁴ = 104808733 is a prime.

It is a zygodrome in base 5.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121585909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60792974 + 60792975.

It is an arithmetic number, because the mean of its divisors is an integer number (60792975).

Almost surely, 2^121585949 is an apocalyptic number.

It is an amenable number.

121585949 is a deficient number, since it is larger than the sum of its proper divisors (1).

121585949 is an equidigital number, since it uses as much as digits as its factorization.

121585949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 44.

The square root of 121585949 is about 11026.6018790922. The cubic root of 121585949 is about 495.4058488371.

The spelling of 121585949 in words is "one hundred twenty-one million, five hundred eighty-five thousand, nine hundred forty-nine".