139006 has 8 divisors (see below), whose sum is σ = 238320. Its totient is φ = 59568.

The previous prime is 138977. The next prime is 139021. The reversal of 139006 is 600931.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4951 + ... + 4978.

It is an arithmetic number, because the mean of its divisors is an integer number (29790).

2¹³⁹⁰⁰⁶ is an apocalyptic number.

139006 is a deficient number, since it is larger than the sum of its proper divisors (99314).

139006 is an equidigital number, since it uses as much as digits as its factorization.

139006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9938.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 139006 is about 372.8350841860. The cubic root of 139006 is about 51.8017600014.

Adding to 139006 its reverse (600931), we get a palindrome (739937).

The spelling of 139006 in words is "one hundred thirty-nine thousand, six".