147442609 has 4 divisors (see below), whose sum is σ = 147628404. Its totient is φ = 147256816.

The previous prime is 147442597. The next prime is 147442613. The reversal of 147442609 is 906244741.

It is a happy number.

147442609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32524209 + 114918400 = 5703^2 + 10720^2 .

It is a cyclic number.

It is not a de Polignac number, because 147442609 - 2⁵ = 147442577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147442709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91702 + ... + 93295.

It is an arithmetic number, because the mean of its divisors is an integer number (36907101).

Almost surely, 2^147442609 is an apocalyptic number.

It is an amenable number.

147442609 is a deficient number, since it is larger than the sum of its proper divisors (185795).

147442609 is an equidigital number, since it uses as much as digits as its factorization.

147442609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185794.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 147442609 is about 12142.5948215363. The cubic root of 147442609 is about 528.2923668232.

The spelling of 147442609 in words is "one hundred forty-seven million, four hundred forty-two thousand, six hundred nine".