409137543 has 6 divisors (see below), whose sum is σ = 590976464. Its totient is φ = 272758356.

The previous prime is 409137541. The next prime is 409137551. The reversal of 409137543 is 345731904.

It is not a de Polignac number, because 409137543 - 2¹ = 409137541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 409137498 and 409137507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409137541) 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, 22729855 + ... + 22729872.

Almost surely, 2^409137543 is an apocalyptic number.

409137543 is a deficient number, since it is larger than the sum of its proper divisors (181838921).

409137543 is a wasteful number, since it uses less digits than its factorization.

409137543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45459733 (or 45459730 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 409137543 is about 20227.1486621323. The cubic root of 409137543 is about 742.3746113468.

The spelling of 409137543 in words is "four hundred nine million, one hundred thirty-seven thousand, five hundred forty-three".