409384198913 has 4 divisors (see below), whose sum is σ = 410188490580. Its totient is φ = 408579907248.

The previous prime is 409384198849. The next prime is 409384198987. The reversal of 409384198913 is 319891483904.

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

It can be written as a sum of positive squares in 2 ways, for example, as 141983515249 + 267400683664 = 376807^2 + 517108^2 .

It is a cyclic number.

It is not a de Polignac number, because 409384198913 - 2⁶ = 409384198849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409384198813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402145070 + ... + 402146087.

It is an arithmetic number, because the mean of its divisors is an integer number (102547122645).

Almost surely, 2^409384198913 is an apocalyptic number.

It is an amenable number.

409384198913 is a deficient number, since it is larger than the sum of its proper divisors (804291667).

409384198913 is an equidigital number, since it uses as much as digits as its factorization.

409384198913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804291666.

The product of its (nonzero) digits is 6718464, while the sum is 59.

The spelling of 409384198913 in words is "four hundred nine billion, three hundred eighty-four million, one hundred ninety-eight thousand, nine hundred thirteen".