40304221009 has 4 divisors (see below), whose sum is σ = 43404545716. Its totient is φ = 37203896304.

The previous prime is 40304221007. The next prime is 40304221019. The reversal of 40304221009 is 90012240304.

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 26166297600 + 14137923409 = 161760^2 + 118903^2 .

It is a cyclic number.

It is not a de Polignac number, because 40304221009 - 2¹ = 40304221007 is a prime.

It is a super-2 number, since 2×40304221009² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40304221003) 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, 1550162334 + ... + 1550162359.

It is an arithmetic number, because the mean of its divisors is an integer number (10851136429).

Almost surely, 2^40304221009 is an apocalyptic number.

It is an amenable number.

40304221009 is a deficient number, since it is larger than the sum of its proper divisors (3100324707).

40304221009 is a wasteful number, since it uses less digits than its factorization.

40304221009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3100324706.

The product of its (nonzero) digits is 1728, while the sum is 25.

The spelling of 40304221009 in words is "forty billion, three hundred four million, two hundred twenty-one thousand, nine".