139867 has 16 divisors (see below), whose sum is σ = 181440. Its totient is φ = 104832.

The previous prime is 139861. The next prime is 139871. The reversal of 139867 is 768931.

It is not a de Polignac number, because 139867 - 2⁷ = 139739 is a prime.

It is a plaindrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139867.

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 15 ways as a sum of consecutive naturals, for example, 2613 + ... + 2665.

It is an arithmetic number, because the mean of its divisors is an integer number (11340).

2¹³⁹⁸⁶⁷ is an apocalyptic number.

139867 is a deficient number, since it is larger than the sum of its proper divisors (41573).

139867 is a wasteful number, since it uses less digits than its factorization.

139867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102.

The product of its digits is 9072, while the sum is 34.

The square root of 139867 is about 373.9879677209. The cubic root of 139867 is about 51.9084929109.

It can be divided in two parts, 13 and 9867, that multiplied together give a triangular number (128271 = T₅₀₆).

The spelling of 139867 in words is "one hundred thirty-nine thousand, eight hundred sixty-seven".