39853 has 4 divisors (see below), whose sum is σ = 43488. Its totient is φ = 36220.

The previous prime is 39847. The next prime is 39857. The reversal of 39853 is 35893.

It is a happy number.

It is the 82-nd star number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 39853 - 2⁵ = 39821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39857) 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, 1801 + ... + 1822.

It is an arithmetic number, because the mean of its divisors is an integer number (10872).

2³⁹⁸⁵³ is an apocalyptic number.

It is an amenable number.

39853 is a deficient number, since it is larger than the sum of its proper divisors (3635).

39853 is a wasteful number, since it uses less digits than its factorization.

39853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3634.

The product of its digits is 3240, while the sum is 28.

The square root of 39853 is about 199.6321617375. The cubic root of 39853 is about 34.1575730972.

The spelling of 39853 in words is "thirty-nine thousand, eight hundred fifty-three".