409006273 has 4 divisors (see below), whose sum is σ = 440468308. Its totient is φ = 377544240.

The previous prime is 409006271. The next prime is 409006277. The reversal of 409006273 is 372600904.

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 86731969 + 322274304 = 9313^2 + 17952^2 .

It is a cyclic number.

It is not a de Polignac number, because 409006273 - 2¹ = 409006271 is a prime.

It is a super-2 number, since 2×409006273² = 334572262706701058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409006271) 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 in 3 ways as a sum of consecutive naturals, for example, 15730998 + ... + 15731023.

It is an arithmetic number, because the mean of its divisors is an integer number (110117077).

Almost surely, 2^409006273 is an apocalyptic number.

It is an amenable number.

409006273 is a deficient number, since it is larger than the sum of its proper divisors (31462035).

409006273 is a wasteful number, since it uses less digits than its factorization.

409006273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31462034.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 409006273 is about 20223.9035055056. The cubic root of 409006273 is about 742.2952069664.

The spelling of 409006273 in words is "four hundred nine million, six thousand, two hundred seventy-three".