147478169 has 4 divisors (see below), whose sum is σ = 147768420. Its totient is φ = 147187920.

The previous prime is 147478157. The next prime is 147478183. The reversal of 147478169 is 961874741.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 961874741 = 1259 ⋅763999.

It can be written as a sum of positive squares in 2 ways, for example, as 45225625 + 102252544 = 6725^2 + 10112^2 .

It is a cyclic number.

It is not a de Polignac number, because 147478169 - 2¹² = 147474073 is a prime.

It is a super-2 number, since 2×147478169² = 43499620663185122, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147478109) 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, 144362 + ... + 145379.

It is an arithmetic number, because the mean of its divisors is an integer number (36942105).

Almost surely, 2^147478169 is an apocalyptic number.

It is an amenable number.

147478169 is a deficient number, since it is larger than the sum of its proper divisors (290251).

147478169 is an equidigital number, since it uses as much as digits as its factorization.

147478169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290250.

The product of its digits is 338688, while the sum is 47.

The square root of 147478169 is about 12144.0590001861. The cubic root of 147478169 is about 528.3348343447.

The spelling of 147478169 in words is "one hundred forty-seven million, four hundred seventy-eight thousand, one hundred sixty-nine".