197391339 has 6 divisors (see below), whose sum is σ = 285120836. Its totient is φ = 131594220.

The previous prime is 197391283. The next prime is 197391367. The reversal of 197391339 is 933193791.

It is not a de Polignac number, because 197391339 - 2¹⁵ = 197358571 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 197391294 and 197391303.

It is not an unprimeable number, because it can be changed into a prime (197391739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10966177 + ... + 10966194.

Almost surely, 2^197391339 is an apocalyptic number.

197391339 is a deficient number, since it is larger than the sum of its proper divisors (87729497).

197391339 is a wasteful number, since it uses less digits than its factorization.

197391339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21932377 (or 21932374 counting only the distinct ones).

The product of its digits is 137781, while the sum is 45.

The square root of 197391339 is about 14049.6028057735. The cubic root of 197391339 is about 582.2498218952.

The spelling of 197391339 in words is "one hundred ninety-seven million, three hundred ninety-one thousand, three hundred thirty-nine".