139694 has 4 divisors (see below), whose sum is σ = 209544. Its totient is φ = 69846.

The previous prime is 139681. The next prime is 139697. The reversal of 139694 is 496931.

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

It is a self number, because there is not a number n which added to its sum of digits gives 139694.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34922 + ... + 34925.

It is an arithmetic number, because the mean of its divisors is an integer number (52386).

2¹³⁹⁶⁹⁴ is an apocalyptic number.

139694 is a deficient number, since it is larger than the sum of its proper divisors (69850).

139694 is an equidigital number, since it uses as much as digits as its factorization.

139694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69849.

The product of its digits is 5832, while the sum is 32.

The square root of 139694 is about 373.7566052928. The cubic root of 139694 is about 51.8870823939.

The spelling of 139694 in words is "one hundred thirty-nine thousand, six hundred ninety-four".