197389297 has 8 divisors (see below), whose sum is σ = 230192000. Its totient is φ = 169190532.

The previous prime is 197389259. The next prime is 197389319. The reversal of 197389297 is 792983791.

It is not a de Polignac number, because 197389297 - 2¹¹ = 197387249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197389217) 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, 287397 + ... + 288082.

It is an arithmetic number, because the mean of its divisors is an integer number (28774000).

Almost surely, 2^197389297 is an apocalyptic number.

197389297 is the 8112-nd hex number.

It is an amenable number.

197389297 is a deficient number, since it is larger than the sum of its proper divisors (32802703).

197389297 is an frugal number, since it uses more digits than its factorization.

197389297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575500 (or 575486 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 55.

The square root of 197389297 is about 14049.5301344920. The cubic root of 197389297 is about 582.2478141099.

The spelling of 197389297 in words is "one hundred ninety-seven million, three hundred eighty-nine thousand, two hundred ninety-seven".