196891439 has 8 divisors (see below), whose sum is σ = 200066400. Its totient is φ = 193729536.

The previous prime is 196891423. The next prime is 196891451. The reversal of 196891439 is 934198691.

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 196891439 - 2⁴ = 196891423 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 (196891489) 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 7 ways as a sum of consecutive naturals, for example, 29774 + ... + 35780.

It is an arithmetic number, because the mean of its divisors is an integer number (25008300).

Almost surely, 2^196891439 is an apocalyptic number.

196891439 is a deficient number, since it is larger than the sum of its proper divisors (3174961).

196891439 is an equidigital number, since it uses as much as digits as its factorization.

196891439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6529.

The product of its digits is 419904, while the sum is 50.

The square root of 196891439 is about 14031.8009891817. The cubic root of 196891439 is about 581.7578841609.

The spelling of 196891439 in words is "one hundred ninety-six million, eight hundred ninety-one thousand, four hundred thirty-nine".