197129949 has 16 divisors (see below), whose sum is σ = 270421632. Its totient is φ = 127677888.

The previous prime is 197129929. The next prime is 197129951. The reversal of 197129949 is 949921791.

It is not a de Polignac number, because 197129949 - 2²⁰ = 196081373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197129929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10359 + ... + 22395.

It is an arithmetic number, because the mean of its divisors is an integer number (16901352).

Almost surely, 2^197129949 is an apocalyptic number.

It is an amenable number.

197129949 is a deficient number, since it is larger than the sum of its proper divisors (73291683).

197129949 is a wasteful number, since it uses less digits than its factorization.

197129949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12196.

The product of its digits is 367416, while the sum is 51.

The square root of 197129949 is about 14040.2973259116. The cubic root of 197129949 is about 581.9926989790.

The spelling of 197129949 in words is "one hundred ninety-seven million, one hundred twenty-nine thousand, nine hundred forty-nine".