39145 has 4 divisors (see below), whose sum is σ = 46980. Its totient is φ = 31312.

The previous prime is 39139. The next prime is 39157. The reversal of 39145 is 54193.

39145 = 58² + 59² + ... + 67².

39145 is nontrivially palindromic in base 12.

39145 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 9216 + 29929 = 96^2 + 173^2 .

It is a cyclic number.

It is not a de Polignac number, because 39145 - 2⁵ = 39113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3910 + ... + 3919.

It is an arithmetic number, because the mean of its divisors is an integer number (11745).

2³⁹¹⁴⁵ is an apocalyptic number.

It is an amenable number.

39145 is a deficient number, since it is larger than the sum of its proper divisors (7835).

39145 is an equidigital number, since it uses as much as digits as its factorization.

39145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7834.

The product of its digits is 540, while the sum is 22.

The square root of 39145 is about 197.8509540033. The cubic root of 39145 is about 33.9540902858.

The spelling of 39145 in words is "thirty-nine thousand, one hundred forty-five".