39147 has 4 divisors (see below), whose sum is σ = 52200. Its totient is φ = 26096.

The previous prime is 39139. The next prime is 39157. The reversal of 39147 is 74193.

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

It is a cyclic number.

It is not a de Polignac number, because 39147 - 2³ = 39139 is a prime.

It is a D-number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 39147.

It is not an unprimeable number, because it can be changed into a prime (39107) 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, 6522 + ... + 6527.

It is an arithmetic number, because the mean of its divisors is an integer number (13050).

2³⁹¹⁴⁷ is an apocalyptic number.

39147 is a deficient number, since it is larger than the sum of its proper divisors (13053).

39147 is a wasteful number, since it uses less digits than its factorization.

39147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13052.

The product of its digits is 756, while the sum is 24.

The square root of 39147 is about 197.8560082484. The cubic root of 39147 is about 33.9546685378.

Adding to 39147 its product of digits (756), we get a triangular number (39903 = T₂₈₂).

The spelling of 39147 in words is "thirty-nine thousand, one hundred forty-seven".