147143917 has 4 divisors (see below), whose sum is σ = 147914496. Its totient is φ = 146373340.

The previous prime is 147143873. The next prime is 147143921. The reversal of 147143917 is 719341741.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147143917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147143947) 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, 385003 + ... + 385384.

It is an arithmetic number, because the mean of its divisors is an integer number (36978624).

Almost surely, 2^147143917 is an apocalyptic number.

It is an amenable number.

147143917 is a deficient number, since it is larger than the sum of its proper divisors (770579).

147143917 is an equidigital number, since it uses as much as digits as its factorization.

147143917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770578.

The product of its digits is 21168, while the sum is 37.

The square root of 147143917 is about 12130.2892381015. The cubic root of 147143917 is about 527.9353841286.

The spelling of 147143917 in words is "one hundred forty-seven million, one hundred forty-three thousand, nine hundred seventeen".