121703893 has 4 divisors (see below), whose sum is σ = 121765228. Its totient is φ = 121642560.

The previous prime is 121703891. The next prime is 121703899. The reversal of 121703893 is 398307121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 88040689 + 33663204 = 9383^2 + 5802^2 .

It is a cyclic number.

It is not a de Polignac number, because 121703893 - 2¹ = 121703891 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121703891) 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 in 3 ways as a sum of consecutive naturals, for example, 27588 + ... + 31693.

It is an arithmetic number, because the mean of its divisors is an integer number (30441307).

Almost surely, 2^121703893 is an apocalyptic number.

It is an amenable number.

121703893 is a deficient number, since it is larger than the sum of its proper divisors (61335).

121703893 is an equidigital number, since it uses as much as digits as its factorization.

121703893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61334.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 121703893 is about 11031.9487399099. The cubic root of 121703893 is about 495.5659859384.

The spelling of 121703893 in words is "one hundred twenty-one million, seven hundred three thousand, eight hundred ninety-three".