121485309 has 8 divisors (see below), whose sum is σ = 176705952. Its totient is φ = 73627440.

The previous prime is 121485293. The next prime is 121485313. The reversal of 121485309 is 903584121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121485309 - 2⁴ = 121485293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 3681373 = 121485309 / (1 + 2 + 1 + 4 + 8 + 5 + 3 + 0 + 9).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121485309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121485109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1840654 + ... + 1840719.

It is an arithmetic number, because the mean of its divisors is an integer number (22088244).

Almost surely, 2^121485309 is an apocalyptic number.

It is an amenable number.

121485309 is a deficient number, since it is larger than the sum of its proper divisors (55220643).

121485309 is a wasteful number, since it uses less digits than its factorization.

121485309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3681387.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 121485309 is about 11022.0374250862. The cubic root of 121485309 is about 495.2691241373.

The spelling of 121485309 in words is "one hundred twenty-one million, four hundred eighty-five thousand, three hundred nine".