139863 has 8 divisors (see below), whose sum is σ = 194688. Its totient is φ = 89144.

The previous prime is 139861. The next prime is 139871. The reversal of 139863 is 368931.

139863 is nontrivially palindromic in base 14.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139863 - 2¹ = 139861 is a prime.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 139863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945 + ... + 1082.

It is an arithmetic number, because the mean of its divisors is an integer number (24336).

2¹³⁹⁸⁶³ is an apocalyptic number.

139863 is a deficient number, since it is larger than the sum of its proper divisors (54825).

139863 is a wasteful number, since it uses less digits than its factorization.

139863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053.

The product of its digits is 3888, while the sum is 30.

The square root of 139863 is about 373.9826199170. The cubic root of 139863 is about 51.9079980694.

The spelling of 139863 in words is "one hundred thirty-nine thousand, eight hundred sixty-three".