197339997 has 4 divisors (see below), whose sum is σ = 263120000. Its totient is φ = 131559996.

The previous prime is 197339971. The next prime is 197339999. The reversal of 197339997 is 799933791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 799933791 = 3 ⋅266644597.

It is not a de Polignac number, because 197339997 - 2⁸ = 197339741 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 (197339999) 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, 32889997 + ... + 32890002.

It is an arithmetic number, because the mean of its divisors is an integer number (65780000).

Almost surely, 2^197339997 is an apocalyptic number.

It is an amenable number.

197339997 is a deficient number, since it is larger than the sum of its proper divisors (65780003).

197339997 is an equidigital number, since it uses as much as digits as its factorization.

197339997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65780002.

The product of its digits is 2893401, while the sum is 57.

The square root of 197339997 is about 14047.7755178534. The cubic root of 197339997 is about 582.1993359540.

The spelling of 197339997 in words is "one hundred ninety-seven million, three hundred thirty-nine thousand, nine hundred ninety-seven".