121695793 has 4 divisors (see below), whose sum is σ = 123690868. Its totient is φ = 119700720.

The previous prime is 121695767. The next prime is 121695797. The reversal of 121695793 is 397596121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 397596121 = 13 ⋅30584317.

It can be written as a sum of positive squares in 2 ways, for example, as 6927424 + 114768369 = 2632^2 + 10713^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121695793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121695797) 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, 997446 + ... + 997567.

It is an arithmetic number, because the mean of its divisors is an integer number (30922717).

Almost surely, 2^121695793 is an apocalyptic number.

It is an amenable number.

121695793 is a deficient number, since it is larger than the sum of its proper divisors (1995075).

121695793 is an equidigital number, since it uses as much as digits as its factorization.

121695793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995074.

The product of its digits is 102060, while the sum is 43.

The square root of 121695793 is about 11031.5816182450. The cubic root of 121695793 is about 495.5549915666.

The spelling of 121695793 in words is "one hundred twenty-one million, six hundred ninety-five thousand, seven hundred ninety-three".