409122344669 has 4 divisors (see below), whose sum is σ = 409558975644. Its totient is φ = 408685713696.

The previous prime is 409122344629. The next prime is 409122344717. The reversal of 409122344669 is 966443221904.

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 63813327769 + 345309016900 = 252613^2 + 587630^2 .

It is a cyclic number.

It is not a de Polignac number, because 409122344669 - 2²⁰ = 409121296093 is a prime.

It is a super-2 number, since 2×409122344669² (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 (409122344629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218314082 + ... + 218315955.

It is an arithmetic number, because the mean of its divisors is an integer number (102389743911).

Almost surely, 2^409122344669 is an apocalyptic number.

It is an amenable number.

409122344669 is a deficient number, since it is larger than the sum of its proper divisors (436630975).

409122344669 is an equidigital number, since it uses as much as digits as its factorization.

409122344669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436630974.

The product of its (nonzero) digits is 2239488, while the sum is 50.

The spelling of 409122344669 in words is "four hundred nine billion, one hundred twenty-two million, three hundred forty-four thousand, six hundred sixty-nine".