147109 has 4 divisors (see below), whose sum is σ = 148204. Its totient is φ = 146016.

The previous prime is 147107. The next prime is 147137. The reversal of 147109 is 901741.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 22500 + 124609 = 150^2 + 353^2 .

It is a 3-Lehmer number, since φ(147109) divides (147109-1)³.

It is a cyclic number.

It is not a de Polignac number, because 147109 - 2¹ = 147107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 147109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147107) 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, 312 + ... + 625.

It is an arithmetic number, because the mean of its divisors is an integer number (37051).

2¹⁴⁷¹⁰⁹ is an apocalyptic number.

It is an amenable number.

147109 is a deficient number, since it is larger than the sum of its proper divisors (1095).

147109 is an equidigital number, since it uses as much as digits as its factorization.

147109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 147109 is about 383.5479109577. The cubic root of 147109 is about 52.7893621437.

It can be divided in two parts, 147 and 109, that added together give a 8-th power (256 = 2⁸).

The spelling of 147109 in words is "one hundred forty-seven thousand, one hundred nine".