121593397 has 4 divisors (see below), whose sum is σ = 121712140. Its totient is φ = 121474656.

The previous prime is 121593383. The next prime is 121593421. The reversal of 121593397 is 793395121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 793395121 = 31 ⋅25593391.

It can be written as a sum of positive squares in 2 ways, for example, as 89851441 + 31741956 = 9479^2 + 5634^2 .

It is a cyclic number.

It is not a de Polignac number, because 121593397 - 2²³ = 113204789 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 (121593337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57822 + ... + 59887.

It is an arithmetic number, because the mean of its divisors is an integer number (30428035).

Almost surely, 2^121593397 is an apocalyptic number.

It is an amenable number.

121593397 is a deficient number, since it is larger than the sum of its proper divisors (118743).

121593397 is a wasteful number, since it uses less digits than its factorization.

121593397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118742.

The product of its digits is 51030, while the sum is 40.

The square root of 121593397 is about 11026.9396026277. The cubic root of 121593397 is about 495.4159643355.

The spelling of 121593397 in words is "one hundred twenty-one million, five hundred ninety-three thousand, three hundred ninety-seven".