409047481 has 8 divisors (see below), whose sum is σ = 418935240. Its totient is φ = 399240192.

The previous prime is 409047437. The next prime is 409047503. The reversal of 409047481 is 184740904.

It can be written as a sum of positive squares in 4 ways, for example, as 13395600 + 395651881 = 3660^2 + 19891^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 409047481 - 2¹³ = 409039289 is a prime.

It is a super-2 number, since 2×409047481² = 334639683424890722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 409047481.

It is not an unprimeable number, because it can be changed into a prime (409047281) 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 7 ways as a sum of consecutive naturals, for example, 9766 + ... + 30223.

It is an arithmetic number, because the mean of its divisors is an integer number (52366905).

Almost surely, 2^409047481 is an apocalyptic number.

It is an amenable number.

409047481 is a deficient number, since it is larger than the sum of its proper divisors (9887759).

409047481 is a wasteful number, since it uses less digits than its factorization.

409047481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40235.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 409047481 is about 20224.9222742635. The cubic root of 409047481 is about 742.3201352504.

The spelling of 409047481 in words is "four hundred nine million, forty-seven thousand, four hundred eighty-one".