147709139 has 4 divisors (see below), whose sum is σ = 148184400. Its totient is φ = 147233880.

The previous prime is 147709129. The next prime is 147709187. The reversal of 147709139 is 931907741.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147709139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 147709096 and 147709105.

It is not an unprimeable number, because it can be changed into a prime (147709129) 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, 237164 + ... + 237785.

It is an arithmetic number, because the mean of its divisors is an integer number (37046100).

Almost surely, 2^147709139 is an apocalyptic number.

147709139 is a deficient number, since it is larger than the sum of its proper divisors (475261).

147709139 is an equidigital number, since it uses as much as digits as its factorization.

147709139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475260.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 147709139 is about 12153.5648679719. The cubic root of 147709139 is about 528.6105041793.

The spelling of 147709139 in words is "one hundred forty-seven million, seven hundred nine thousand, one hundred thirty-nine".