971272197 has 12 divisors (see below), whose sum is σ = 1603370080. Its totient is φ = 555012648.

The previous prime is 971272193. The next prime is 971272207. The reversal of 971272197 is 791272179.

It is a happy number.

It is not a de Polignac number, because 971272197 - 2² = 971272193 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 (971272193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7708447 + ... + 7708572.

Almost surely, 2^971272197 is an apocalyptic number.

It is an amenable number.

971272197 is a deficient number, since it is larger than the sum of its proper divisors (632097883).

971272197 is a wasteful number, since it uses less digits than its factorization.

971272197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15417032 (or 15417029 counting only the distinct ones).

The product of its digits is 111132, while the sum is 45.

The square root of 971272197 is about 31165.2402044329. The cubic root of 971272197 is about 990.3308750173.

The spelling of 971272197 in words is "nine hundred seventy-one million, two hundred seventy-two thousand, one hundred ninety-seven".