409163684407 has 4 divisors (see below), whose sum is σ = 426953409840. Its totient is φ = 391373958976.

The previous prime is 409163684389. The next prime is 409163684471. The reversal of 409163684407 is 704486361904.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 409163684407 - 2¹⁵ = 409163651639 is a prime.

It is a super-2 number, since 2×409163684407² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409163684107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8894862682 + ... + 8894862727.

It is an arithmetic number, because the mean of its divisors is an integer number (106738352460).

Almost surely, 2^409163684407 is an apocalyptic number.

409163684407 is a deficient number, since it is larger than the sum of its proper divisors (17789725433).

409163684407 is a wasteful number, since it uses less digits than its factorization.

409163684407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17789725432.

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 409163684407 in words is "four hundred nine billion, one hundred sixty-three million, six hundred eighty-four thousand, four hundred seven".