409743673 has 4 divisors (see below), whose sum is σ = 433846260. Its totient is φ = 385641088.

The previous prime is 409743667. The next prime is 409743701. The reversal of 409743673 is 376347904.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 209323024 + 200420649 = 14468^2 + 14157^2 .

It is a cyclic number.

It is not a de Polignac number, because 409743673 - 2⁵ = 409743641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409743073) 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, 12051268 + ... + 12051301.

It is an arithmetic number, because the mean of its divisors is an integer number (108461565).

Almost surely, 2^409743673 is an apocalyptic number.

It is an amenable number.

409743673 is a deficient number, since it is larger than the sum of its proper divisors (24102587).

409743673 is a wasteful number, since it uses less digits than its factorization.

409743673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24102586.

The product of its (nonzero) digits is 381024, while the sum is 43.

The square root of 409743673 is about 20242.1261976108. The cubic root of 409743673 is about 742.7410353880.

The spelling of 409743673 in words is "four hundred nine million, seven hundred forty-three thousand, six hundred seventy-three".