41722009309 has 4 divisors (see below), whose sum is σ = 41765789916. Its totient is φ = 41678228704.

The previous prime is 41722009291. The next prime is 41722009337. The reversal of 41722009309 is 90390022714.

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 13013790084 + 28708219225 = 114078^2 + 169435^2 .

It is a cyclic number.

It is not a de Polignac number, because 41722009309 - 2²³ = 41713620701 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 (41722109309) 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, 21888874 + ... + 21890779.

It is an arithmetic number, because the mean of its divisors is an integer number (10441447479).

Almost surely, 2^41722009309 is an apocalyptic number.

It is an amenable number.

41722009309 is a deficient number, since it is larger than the sum of its proper divisors (43780607).

41722009309 is an equidigital number, since it uses as much as digits as its factorization.

41722009309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43780606.

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 41722009309 in words is "forty-one billion, seven hundred twenty-two million, nine thousand, three hundred nine".