147409 has 2 divisors, whose sum is σ = 147410. Its totient is φ = 147408.

The previous prime is 147401. The next prime is 147419. The reversal of 147409 is 904741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138384 + 9025 = 372^2 + 95^2 .

It is a cyclic number.

It is not a de Polignac number, because 147409 - 2³ = 147401 is a prime.

It is a super-3 number, since 3×147409³ = 9609333247016787, which contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (147401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73704 + 73705.

It is an arithmetic number, because the mean of its divisors is an integer number (73705).

2¹⁴⁷⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

147409 is a deficient number, since it is larger than the sum of its proper divisors (1).

147409 is an equidigital number, since it uses as much as digits as its factorization.

147409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 147409 is about 383.9387972060. The cubic root of 147409 is about 52.8252223006.

The spelling of 147409 in words is "one hundred forty-seven thousand, four hundred nine".