409215887 has 8 divisors (see below), whose sum is σ = 419272896. Its totient is φ = 399215232.

The previous prime is 409215871. The next prime is 409215913. The reversal of 409215887 is 788512904.

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 409215887 - 2⁴ = 409215871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409215817) 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, 803 + ... + 28619.

It is an arithmetic number, because the mean of its divisors is an integer number (52409112).

Almost surely, 2^409215887 is an apocalyptic number.

409215887 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

409215887 is a deficient number, since it is larger than the sum of its proper divisors (10057009).

409215887 is a wasteful number, since it uses less digits than its factorization.

409215887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28177.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 409215887 is about 20229.0851745698. The cubic root of 409215887 is about 742.4219930368.

The spelling of 409215887 in words is "four hundred nine million, two hundred fifteen thousand, eight hundred eighty-seven".