147879189 has 30 divisors (see below), whose sum is σ = 225832706. Its totient is φ = 96409440.

The previous prime is 147879187. The next prime is 147879203. The reversal of 147879189 is 981978741.

147879189 is a `hidden beast` number, since 1 + 478 + 7 + 91 + 89 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 43164900 + 104714289 = 6570^2 + 10233^2 .

It is not a de Polignac number, because 147879189 - 2¹ = 147879187 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 (147879187) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 854707 + ... + 854879.

Almost surely, 2^147879189 is an apocalyptic number.

It is an amenable number.

147879189 is a deficient number, since it is larger than the sum of its proper divisors (77953517).

147879189 is an frugal number, since it uses more digits than its factorization.

147879189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 237 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 54.

The square root of 147879189 is about 12160.5587453867. The cubic root of 147879189 is about 528.8132804903.

The spelling of 147879189 in words is "one hundred forty-seven million, eight hundred seventy-nine thousand, one hundred eighty-nine".