409391124871 has 8 divisors (see below), whose sum is σ = 431040252800. Its totient is φ = 387752219640.

The previous prime is 409391124869. The next prime is 409391124911. The reversal of 409391124871 is 178421193904.

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

It is not a de Polignac number, because 409391124871 - 2¹ = 409391124869 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 (409391124271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2473395 + ... + 2633716.

It is an arithmetic number, because the mean of its divisors is an integer number (53880031600).

Almost surely, 2^409391124871 is an apocalyptic number.

409391124871 is a deficient number, since it is larger than the sum of its proper divisors (21649127929).

409391124871 is a wasteful number, since it uses less digits than its factorization.

409391124871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5111349.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 409391124871 in words is "four hundred nine billion, three hundred ninety-one million, one hundred twenty-four thousand, eight hundred seventy-one".