197713439 has 16 divisors (see below), whose sum is σ = 252516096. Its totient is φ = 150302400.

The previous prime is 197713403. The next prime is 197713447. The reversal of 197713439 is 934317791.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197713439 is a prime.

It is a super-2 number, since 2×197713439² = 78181207922413442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 197713439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197713469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28157 + ... + 34470.

It is an arithmetic number, because the mean of its divisors is an integer number (15782256).

Almost surely, 2^197713439 is an apocalyptic number.

197713439 is a deficient number, since it is larger than the sum of its proper divisors (54802657).

197713439 is a wasteful number, since it uses less digits than its factorization.

197713439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62686.

The product of its digits is 142884, while the sum is 44.

The square root of 197713439 is about 14061.0610908281. The cubic root of 197713439 is about 582.5663517410.

The spelling of 197713439 in words is "one hundred ninety-seven million, seven hundred thirteen thousand, four hundred thirty-nine".