147981197 has 16 divisors (see below), whose sum is σ = 188009472. Its totient is φ = 113304960.

The previous prime is 147981179. The next prime is 147981217. The reversal of 147981197 is 791189741.

It is a cyclic number.

It is not a de Polignac number, because 147981197 - 2⁸ = 147980941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147981157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23408 + ... + 29049.

It is an arithmetic number, because the mean of its divisors is an integer number (11750592).

Almost surely, 2^147981197 is an apocalyptic number.

It is an amenable number.

147981197 is a deficient number, since it is larger than the sum of its proper divisors (40028275).

147981197 is a wasteful number, since it uses less digits than its factorization.

147981197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52508.

The product of its digits is 127008, while the sum is 47.

The square root of 147981197 is about 12164.7522375098. The cubic root of 147981197 is about 528.9348454578.

The spelling of 147981197 in words is "one hundred forty-seven million, nine hundred eighty-one thousand, one hundred ninety-seven".