121983493 has 2 divisors, whose sum is σ = 121983494. Its totient is φ = 121983492.

The previous prime is 121983479. The next prime is 121983509. The reversal of 121983493 is 394389121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77053284 + 44930209 = 8778^2 + 6703^2 .

It is a cyclic number.

It is not a de Polignac number, because 121983493 - 2¹⁷ = 121852421 is a prime.

It is a super-3 number, since 3×121983493³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121983403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60991746 + 60991747.

It is an arithmetic number, because the mean of its divisors is an integer number (60991747).

Almost surely, 2^121983493 is an apocalyptic number.

It is an amenable number.

121983493 is a deficient number, since it is larger than the sum of its proper divisors (1).

121983493 is an equidigital number, since it uses as much as digits as its factorization.

121983493 is an odious number, because the sum of its binary digits is odd.

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

The square root of 121983493 is about 11044.6137551297. The cubic root of 121983493 is about 495.9451966960.

The spelling of 121983493 in words is "one hundred twenty-one million, nine hundred eighty-three thousand, four hundred ninety-three".