139347283 has 4 divisors (see below), whose sum is σ = 147544200. Its totient is φ = 131150368.

The previous prime is 139347253. The next prime is 139347293. The reversal of 139347283 is 382743931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 382743931 = 1613 ⋅237287.

It is a cyclic number.

It is not a de Polignac number, because 139347283 - 2⁵ = 139347251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139347223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4098433 + ... + 4098466.

It is an arithmetic number, because the mean of its divisors is an integer number (36886050).

Almost surely, 2^139347283 is an apocalyptic number.

139347283 is a deficient number, since it is larger than the sum of its proper divisors (8196917).

139347283 is an equidigital number, since it uses as much as digits as its factorization.

139347283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8196916.

The product of its digits is 108864, while the sum is 40.

The square root of 139347283 is about 11804.5450145272. The cubic root of 139347283 is about 518.4411935140.

The spelling of 139347283 in words is "one hundred thirty-nine million, three hundred forty-seven thousand, two hundred eighty-three".