147889193 has 8 divisors (see below), whose sum is σ = 150547656. Its totient is φ = 145238400.

The previous prime is 147889187. The next prime is 147889219. The reversal of 147889193 is 391988741.

It can be written as a sum of positive squares in 4 ways, for example, as 2999824 + 144889369 = 1732^2 + 12037^2 .

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 147889193 - 2⁴ = 147889177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147889163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48605 + ... + 51557.

It is an arithmetic number, because the mean of its divisors is an integer number (18818457).

Almost surely, 2^147889193 is an apocalyptic number.

It is an amenable number.

147889193 is a deficient number, since it is larger than the sum of its proper divisors (2658463).

147889193 is an equidigital number, since it uses as much as digits as its factorization.

147889193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3835.

The product of its digits is 435456, while the sum is 50.

The square root of 147889193 is about 12160.9700682141. The cubic root of 147889193 is about 528.8252049285.

The spelling of 147889193 in words is "one hundred forty-seven million, eight hundred eighty-nine thousand, one hundred ninety-three".