139993599 has 8 divisors (see below), whose sum is σ = 186790912. Its totient is φ = 93262680.

The previous prime is 139993559. The next prime is 139993621. The reversal of 139993599 is 995399931.

139993599 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 139993599 - 2¹² = 139989503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139993559) 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, 11449 + ... + 20274.

It is an arithmetic number, because the mean of its divisors is an integer number (23348864).

Almost surely, 2^139993599 is an apocalyptic number.

139993599 is a deficient number, since it is larger than the sum of its proper divisors (46797313).

139993599 is a wasteful number, since it uses less digits than its factorization.

139993599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33197.

The product of its digits is 2657205, while the sum is 57.

The square root of 139993599 is about 11831.8890714881. The cubic root of 139993599 is about 519.2414964562.

The spelling of 139993599 in words is "one hundred thirty-nine million, nine hundred ninety-three thousand, five hundred ninety-nine".