409253644801 has 4 divisors (see below), whose sum is σ = 410141397204. Its totient is φ = 408365892400.

The previous prime is 409253644739. The next prime is 409253644829. The reversal of 409253644801 is 108446352904.

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 93464718400 + 315788926401 = 305720^2 + 561951^2 .

It is a cyclic number.

It is not a de Polignac number, because 409253644801 - 2¹¹ = 409253642753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409253644831) 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, 443875510 + ... + 443876431.

It is an arithmetic number, because the mean of its divisors is an integer number (102535349301).

Almost surely, 2^409253644801 is an apocalyptic number.

It is an amenable number.

409253644801 is a deficient number, since it is larger than the sum of its proper divisors (887752403).

409253644801 is an equidigital number, since it uses as much as digits as its factorization.

409253644801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887752402.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 409253644801 in words is "four hundred nine billion, two hundred fifty-three million, six hundred forty-four thousand, eight hundred one".