409247347 has 6 divisors (see below), whose sum is σ = 411895428. Its totient is φ = 406616184.

The previous prime is 409247309. The next prime is 409247369. The reversal of 409247347 is 743742904.

It is a de Polignac number, because none of the positive numbers 2^k-409247347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409247747) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16348 + ... + 32950.

It is an arithmetic number, because the mean of its divisors is an integer number (68649238).

Almost surely, 2^409247347 is an apocalyptic number.

409247347 is a deficient number, since it is larger than the sum of its proper divisors (2648081).

409247347 is an equidigital number, since it uses as much as digits as its factorization.

409247347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16917 (or 16760 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 409247347 is about 20229.8627528711. The cubic root of 409247347 is about 742.4410180373.

The spelling of 409247347 in words is "four hundred nine million, two hundred forty-seven thousand, three hundred forty-seven".