139384775 has 6 divisors (see below), whose sum is σ = 172837152. Its totient is φ = 111507800.

The previous prime is 139384697. The next prime is 139384799. The reversal of 139384775 is 577483931.

It is not a de Polignac number, because 139384775 - 2¹⁴ = 139368391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2787671 + ... + 2787720.

It is an arithmetic number, because the mean of its divisors is an integer number (28806192).

Almost surely, 2^139384775 is an apocalyptic number.

139384775 is a deficient number, since it is larger than the sum of its proper divisors (33452377).

139384775 is an equidigital number, since it uses as much as digits as its factorization.

139384775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5575401 (or 5575396 counting only the distinct ones).

The product of its digits is 635040, while the sum is 47.

The square root of 139384775 is about 11806.1329401290. The cubic root of 139384775 is about 518.4876856398.

It can be divided in two parts, 1393 and 84775, that added together give a palindrome (86168).

The spelling of 139384775 in words is "one hundred thirty-nine million, three hundred eighty-four thousand, seven hundred seventy-five".