139893 has 16 divisors (see below), whose sum is σ = 213696. Its totient is φ = 80640.

The previous prime is 139891. The next prime is 139901. The reversal of 139893 is 398931.

It is not a de Polignac number, because 139893 - 2¹ = 139891 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558 + ... + 768.

It is an arithmetic number, because the mean of its divisors is an integer number (13356).

2¹³⁹⁸⁹³ is an apocalyptic number.

139893 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

139893 is a deficient number, since it is larger than the sum of its proper divisors (73803).

139893 is a wasteful number, since it uses less digits than its factorization.

139893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244.

The product of its digits is 5832, while the sum is 33.

The square root of 139893 is about 374.0227265822. The cubic root of 139893 is about 51.9117091501.

The spelling of 139893 in words is "one hundred thirty-nine thousand, eight hundred ninety-three".