196447139 has 8 divisors (see below), whose sum is σ = 227216640. Its totient is φ = 166354056.

The previous prime is 196447133. The next prime is 196447157. The reversal of 196447139 is 931744691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 196447139 - 2²⁰ = 195398563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 196447139.

It is not an unprimeable number, because it can be changed into a prime (196447133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168479 + ... + 169640.

It is an arithmetic number, because the mean of its divisors is an integer number (28402080).

Almost surely, 2^196447139 is an apocalyptic number.

196447139 is a deficient number, since it is larger than the sum of its proper divisors (30769501).

196447139 is an equidigital number, since it uses as much as digits as its factorization.

196447139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338209.

The product of its digits is 163296, while the sum is 44.

The square root of 196447139 is about 14015.9601526260. The cubic root of 196447139 is about 581.3199614559.

The spelling of 196447139 in words is "one hundred ninety-six million, four hundred forty-seven thousand, one hundred thirty-nine".