409405743 has 6 divisors (see below), whose sum is σ = 591363864. Its totient is φ = 272937156.

The previous prime is 409405721. The next prime is 409405751. The reversal of 409405743 is 347504904.

409405743 is a `hidden beast` number, since 40 + 9 + 40 + 574 + 3 = 666.

It is not a de Polignac number, because 409405743 - 2⁸ = 409405487 is a prime.

It is a super-2 number, since 2×409405743² = 335226124802764098, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 409405698 and 409405707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409405783) 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, 22744755 + ... + 22744772.

It is an arithmetic number, because the mean of its divisors is an integer number (98560644).

Almost surely, 2^409405743 is an apocalyptic number.

409405743 is a deficient number, since it is larger than the sum of its proper divisors (181958121).

409405743 is a wasteful number, since it uses less digits than its factorization.

409405743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45489533 (or 45489530 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 409405743 is about 20233.7772795887. Note that the first 3 decimals coincide. The cubic root of 409405743 is about 742.5367910212.

The spelling of 409405743 in words is "four hundred nine million, four hundred five thousand, seven hundred forty-three".