121646479 has 2 divisors, whose sum is σ = 121646480. Its totient is φ = 121646478.

The previous prime is 121646477. The next prime is 121646513. The reversal of 121646479 is 974646121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121646479 - 2¹ = 121646477 is a prime.

Together with 121646477, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121646477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60823239 + 60823240.

It is an arithmetic number, because the mean of its divisors is an integer number (60823240).

Almost surely, 2^121646479 is an apocalyptic number.

121646479 is a deficient number, since it is larger than the sum of its proper divisors (1).

121646479 is an equidigital number, since it uses as much as digits as its factorization.

121646479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 121646479 is about 11029.3462634918. The cubic root of 121646479 is about 495.4880456739.

The spelling of 121646479 in words is "one hundred twenty-one million, six hundred forty-six thousand, four hundred seventy-nine".