139974 has 16 divisors (see below), whose sum is σ = 287280. Its totient is φ = 45440.

The previous prime is 139969. The next prime is 139981. The reversal of 139974 is 479931.

It is a Curzon 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 139974.

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 39 + ... + 530.

It is an arithmetic number, because the mean of its divisors is an integer number (17955).

2¹³⁹⁹⁷⁴ is an apocalyptic number.

139974 is an abundant number, since it is smaller than the sum of its proper divisors (147306).

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

139974 is a wasteful number, since it uses less digits than its factorization.

139974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615.

The product of its digits is 6804, while the sum is 33.

The square root of 139974 is about 374.1309931027. The cubic root of 139974 is about 51.9217264184.

The spelling of 139974 in words is "one hundred thirty-nine thousand, nine hundred seventy-four".