147192817 has 8 divisors (see below), whose sum is σ = 158407272. Its totient is φ = 136262400.

The previous prime is 147192811. The next prime is 147192821. The reversal of 147192817 is 718291741.

It can be written as a sum of positive squares in 4 ways, for example, as 26873856 + 120318961 = 5184^2 + 10969^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 147192817 - 2³ = 147192809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 147192817.

It is not an unprimeable number, because it can be changed into a prime (147192811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69934 + ... + 72007.

It is an arithmetic number, because the mean of its divisors is an integer number (19800909).

Almost surely, 2^147192817 is an apocalyptic number.

147192817 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

147192817 is a deficient number, since it is larger than the sum of its proper divisors (11214455).

147192817 is a wasteful number, since it uses less digits than its factorization.

147192817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142019.

The product of its digits is 28224, while the sum is 40.

The square root of 147192817 is about 12132.3046862498. The cubic root of 147192817 is about 527.9938601693.

The spelling of 147192817 in words is "one hundred forty-seven million, one hundred ninety-two thousand, eight hundred seventeen".