121795399 has 8 divisors (see below), whose sum is σ = 133364880. Its totient is φ = 110308800.

The previous prime is 121795357. The next prime is 121795403. The reversal of 121795399 is 993597121.

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

It is a cyclic number.

It is not a de Polignac number, because 121795399 - 2¹¹ = 121793351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121795309) 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, 17622 + ... + 23539.

It is an arithmetic number, because the mean of its divisors is an integer number (16670610).

Almost surely, 2^121795399 is an apocalyptic number.

121795399 is a deficient number, since it is larger than the sum of its proper divisors (11569481).

121795399 is a wasteful number, since it uses less digits than its factorization.

121795399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41441.

The product of its digits is 153090, while the sum is 46.

The square root of 121795399 is about 11036.0952786753. The cubic root of 121795399 is about 495.6901558933.

It can be divided in two parts, 12179 and 5399, that added together give a triangular number (17578 = T₁₈₇).

The spelling of 121795399 in words is "one hundred twenty-one million, seven hundred ninety-five thousand, three hundred ninety-nine".