139673613 has 8 divisors (see below), whose sum is σ = 190194048. Its totient is φ = 91134464.

The previous prime is 139673587. The next prime is 139673647. The reversal of 139673613 is 316376931.

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

It is a cyclic number.

It is not a de Polignac number, because 139673613 - 2¹⁴ = 139657229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139673213) 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, 495156 + ... + 495437.

It is an arithmetic number, because the mean of its divisors is an integer number (23774256).

Almost surely, 2^139673613 is an apocalyptic number.

It is an amenable number.

139673613 is a deficient number, since it is larger than the sum of its proper divisors (50520435).

139673613 is an equidigital number, since it uses as much as digits as its factorization.

139673613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990643.

The product of its digits is 61236, while the sum is 39.

The square root of 139673613 is about 11818.3591500682. The cubic root of 139673613 is about 518.8455813039.

The spelling of 139673613 in words is "one hundred thirty-nine million, six hundred seventy-three thousand, six hundred thirteen".