192317897 has 4 divisors (see below), whose sum is σ = 197515716. Its totient is φ = 187120080.

The previous prime is 192317869. The next prime is 192317911. The reversal of 192317897 is 798713291.

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 167676601 + 24641296 = 12949^2 + 4964^2 .

It is a cyclic number.

It is not a de Polignac number, because 192317897 - 2⁸ = 192317641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (192317857) 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, 2598854 + ... + 2598927.

It is an arithmetic number, because the mean of its divisors is an integer number (49378929).

Almost surely, 2^192317897 is an apocalyptic number.

It is an amenable number.

192317897 is a deficient number, since it is larger than the sum of its proper divisors (5197819).

192317897 is an equidigital number, since it uses as much as digits as its factorization.

192317897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5197818.

The product of its digits is 190512, while the sum is 47.

The square root of 192317897 is about 13867.8728361634. The cubic root of 192317897 is about 577.2180461807.

The spelling of 192317897 in words is "one hundred ninety-two million, three hundred seventeen thousand, eight hundred ninety-seven".