147109809 has 24 divisors (see below), whose sum is σ = 248915808. Its totient is φ = 76419840.

The previous prime is 147109801. The next prime is 147109843. The reversal of 147109809 is 908901741.

It is a happy number.

147109809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 147109809 - 2³ = 147109801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147109801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43872 + ... + 47105.

It is an arithmetic number, because the mean of its divisors is an integer number (10371492).

Almost surely, 2^147109809 is an apocalyptic number.

It is an amenable number.

147109809 is a deficient number, since it is larger than the sum of its proper divisors (101805999).

147109809 is a wasteful number, since it uses less digits than its factorization.

147109809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91005 (or 90998 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 147109809 is about 12128.8832544468. The cubic root of 147109809 is about 527.8945891211.

The spelling of 147109809 in words is "one hundred forty-seven million, one hundred nine thousand, eight hundred nine".