139713409 has 8 divisors (see below), whose sum is σ = 152500320. Its totient is φ = 126940800.

The previous prime is 139713397. The next prime is 139713419. The reversal of 139713409 is 904317931.

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 139713409 - 2¹³ = 139705217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139713419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35082 + ... + 38860.

It is an arithmetic number, because the mean of its divisors is an integer number (19062540).

Almost surely, 2^139713409 is an apocalyptic number.

It is an amenable number.

139713409 is a deficient number, since it is larger than the sum of its proper divisors (12786911).

139713409 is a wasteful number, since it uses less digits than its factorization.

139713409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7151.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 139713409 is about 11820.0426818180. The cubic root of 139713409 is about 518.8948533594.

The spelling of 139713409 in words is "one hundred thirty-nine million, seven hundred thirteen thousand, four hundred nine".