197007947 has 4 divisors (see below), whose sum is σ = 199706760. Its totient is φ = 194309136.

The previous prime is 197007919. The next prime is 197007953. The reversal of 197007947 is 749700791.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749700791 = 7 ⋅107100113.

It is a cyclic number.

It is not a de Polignac number, because 197007947 - 2²⁰ = 195959371 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 197007898 and 197007907.

It is not an unprimeable number, because it can be changed into a prime (197007847) 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, 1349297 + ... + 1349442.

It is an arithmetic number, because the mean of its divisors is an integer number (49926690).

Almost surely, 2^197007947 is an apocalyptic number.

197007947 is a deficient number, since it is larger than the sum of its proper divisors (2698813).

197007947 is an equidigital number, since it uses as much as digits as its factorization.

197007947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2698812.

The product of its (nonzero) digits is 111132, while the sum is 44.

The square root of 197007947 is about 14035.9519449163. The cubic root of 197007947 is about 581.8726108060.

The spelling of 197007947 in words is "one hundred ninety-seven million, seven thousand, nine hundred forty-seven".