193897 has 4 divisors (see below), whose sum is σ = 211536. Its totient is φ = 176260.

The previous prime is 193891. The next prime is 193937. The reversal of 193897 is 798391.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-193897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193891) 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 in 3 ways as a sum of consecutive naturals, for example, 8803 + ... + 8824.

It is an arithmetic number, because the mean of its divisors is an integer number (52884).

2¹⁹³⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

193897 is a deficient number, since it is larger than the sum of its proper divisors (17639).

193897 is a wasteful number, since it uses less digits than its factorization.

193897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17638.

The product of its digits is 13608, while the sum is 37.

The square root of 193897 is about 440.3373706603. The cubic root of 193897 is about 57.8793568396.

It can be divided in two parts, 19 and 3897, that added together give a triangular number (3916 = T₈₈).

The spelling of 193897 in words is "one hundred ninety-three thousand, eight hundred ninety-seven".