139674 has 8 divisors (see below), whose sum is σ = 279360. Its totient is φ = 46556.

The previous prime is 139663. The next prime is 139681. The reversal of 139674 is 476931.

Added to its reverse (476931) it gives a triangular number (616605 = T₁₁₁₀).

It is a happy number.

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

139674 is an admirable number.

It is a congruent number.

It is an unprimeable number.

139674 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11634 + ... + 11645.

It is an arithmetic number, because the mean of its divisors is an integer number (34920).

2¹³⁹⁶⁷⁴ is an apocalyptic number.

139674 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139674 is a wasteful number, since it uses less digits than its factorization.

139674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23284.

The product of its digits is 4536, while the sum is 30.

The square root of 139674 is about 373.7298489551. The cubic root of 139674 is about 51.8846060500.

Adding to 139674 its reverse (476931), we get a triangular number (616605 = T₁₁₁₀).

The spelling of 139674 in words is "one hundred thirty-nine thousand, six hundred seventy-four".