139623673 has 8 divisors (see below), whose sum is σ = 160827392. Its totient is φ = 118734336.

The previous prime is 139623613. The next prime is 139623683. The reversal of 139623673 is 376326931.

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

It is a de Polignac number, because none of the positive numbers 2^k-139623673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139623613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77640 + ... + 79417.

It is an arithmetic number, because the mean of its divisors is an integer number (20103424).

Almost surely, 2^139623673 is an apocalyptic number.

It is an amenable number.

139623673 is a deficient number, since it is larger than the sum of its proper divisors (21203719).

139623673 is a wasteful number, since it uses less digits than its factorization.

139623673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157191.

The product of its digits is 122472, while the sum is 40.

The square root of 139623673 is about 11816.2461467253. The cubic root of 139623673 is about 518.7837365585.

The spelling of 139623673 in words is "one hundred thirty-nine million, six hundred twenty-three thousand, six hundred seventy-three".