196443489 has 16 divisors (see below), whose sum is σ = 300775680. Its totient is φ = 112790160.

The previous prime is 196443469. The next prime is 196443491. The reversal of 196443489 is 984344691.

It is a happy number.

It is not a de Polignac number, because 196443489 - 2²¹ = 194346337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (196443469) 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, 156027 + ... + 157280.

It is an arithmetic number, because the mean of its divisors is an integer number (18798480).

Almost surely, 2^196443489 is an apocalyptic number.

196443489 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

196443489 is a deficient number, since it is larger than the sum of its proper divisors (104332191).

196443489 is a wasteful number, since it uses less digits than its factorization.

196443489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313340.

The product of its digits is 746496, while the sum is 48.

The square root of 196443489 is about 14015.8299433177. The cubic root of 196443489 is about 581.3163611133.

The spelling of 196443489 in words is "one hundred ninety-six million, four hundred forty-three thousand, four hundred eighty-nine".