139574147 has 4 divisors (see below), whose sum is σ = 140093280. Its totient is φ = 139055016.

The previous prime is 139574077. The next prime is 139574153. The reversal of 139574147 is 741475931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139574147 - 2⁸ = 139573891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139574177) 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 3 ways as a sum of consecutive naturals, for example, 259163 + ... + 259700.

It is an arithmetic number, because the mean of its divisors is an integer number (35023320).

Almost surely, 2^139574147 is an apocalyptic number.

139574147 is a deficient number, since it is larger than the sum of its proper divisors (519133).

139574147 is an equidigital number, since it uses as much as digits as its factorization.

139574147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519132.

The product of its digits is 105840, while the sum is 41.

The square root of 139574147 is about 11814.1502868382. The cubic root of 139574147 is about 518.7223899371.

The spelling of 139574147 in words is "one hundred thirty-nine million, five hundred seventy-four thousand, one hundred forty-seven".