409441566 has 16 divisors (see below), whose sum is σ = 867052944. Its totient is φ = 128452224.

The previous prime is 409441553. The next prime is 409441579. The reversal of 409441566 is 665144904.

It is an interprime number because it is at equal distance from previous prime (409441553) and next prime (409441579).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2006965 + ... + 2007168.

It is an arithmetic number, because the mean of its divisors is an integer number (54190809).

Almost surely, 2^409441566 is an apocalyptic number.

409441566 is an abundant number, since it is smaller than the sum of its proper divisors (457611378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

409441566 is a wasteful number, since it uses less digits than its factorization.

409441566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4014155.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 409441566 is about 20234.6624879191. The cubic root of 409441566 is about 742.5584477111.

The spelling of 409441566 in words is "four hundred nine million, four hundred forty-one thousand, five hundred sixty-six".