147549609 has 9 divisors (see below), whose sum is σ = 213179863. Its totient is φ = 98342112.

The previous prime is 147549583. The next prime is 147549617. The reversal of 147549609 is 906945741.

The square root of 147549609 is 12147.

It is a perfect power (a square), and thus also a powerful number.

147549609 is a `hidden beast` number, since 1 + 47 + 549 + 60 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36036009 + 111513600 = 6003^2 + 10560^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 147549609 - 2¹³ = 147541417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (147549659) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 34417 + ... + 38465.

Almost surely, 2^147549609 is an apocalyptic number.

147549609 is the 12147-th square number.

147549609 is the 6074-th centered octagonal number.

It is an amenable number.

147549609 is a deficient number, since it is larger than the sum of its proper divisors (65630254).

147549609 is an frugal number, since it uses more digits than its factorization.

147549609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8104 (or 4052 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The cubic root of 147549609 is about 528.4201309186.

The spelling of 147549609 in words is "one hundred forty-seven million, five hundred forty-nine thousand, six hundred nine".