139719 has 4 divisors (see below), whose sum is σ = 186296. Its totient is φ = 93144.

The previous prime is 139709. The next prime is 139721. The reversal of 139719 is 917931.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 139719 - 2⁴ = 139703 is a prime.

It is a super-2 number, since 2×139719² = 39042797922, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139709) 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, 23284 + ... + 23289.

It is an arithmetic number, because the mean of its divisors is an integer number (46574).

2¹³⁹⁷¹⁹ is an apocalyptic number.

139719 is a deficient number, since it is larger than the sum of its proper divisors (46577).

139719 is an equidigital number, since it uses as much as digits as its factorization.

139719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46576.

The product of its digits is 1701, while the sum is 30.

The square root of 139719 is about 373.7900480216. The cubic root of 139719 is about 51.8901774915.

It can be divided in two parts, 139 and 719, that added together give a palindrome (858).

The spelling of 139719 in words is "one hundred thirty-nine thousand, seven hundred nineteen".