139677 has 4 divisors (see below), whose sum is σ = 186240. Its totient is φ = 93116.

The previous prime is 139663. The next prime is 139681. The reversal of 139677 is 776931.

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, and also an emirpimes, since its reverse is a distinct semiprime: 776931 = 3 ⋅258977.

It is a cyclic number.

It is not a de Polignac number, because 139677 - 2⁴ = 139661 is a prime.

It is a D-number.

139677 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139677.

It is not an unprimeable number, because it can be changed into a prime (139627) 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, 23277 + ... + 23282.

It is an arithmetic number, because the mean of its divisors is an integer number (46560).

139677 is a Friedman number, since it can be written as (6^(7-1)-97)*3, using all its digits and the basic arithmetic operations.

2¹³⁹⁶⁷⁷ is an apocalyptic number.

It is an amenable number.

139677 is a deficient number, since it is larger than the sum of its proper divisors (46563).

139677 is an equidigital number, since it uses as much as digits as its factorization.

139677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46562.

The product of its digits is 7938, while the sum is 33.

The square root of 139677 is about 373.7338625279. The cubic root of 139677 is about 51.8849775166.

The spelling of 139677 in words is "one hundred thirty-nine thousand, six hundred seventy-seven".