40089900409 has 8 divisors (see below), whose sum is σ = 44226757512. Its totient is φ = 36103474560.

The previous prime is 40089900397. The next prime is 40089900413. The reversal of 40089900409 is 90400998004.

It can be written as a sum of positive squares in 4 ways, for example, as 441126009 + 39648774400 = 21003^2 + 199120^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40089900409 - 2⁷ = 40089900281 is a prime.

It is a super-2 number, since 2×40089900409² (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 (40089900439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37607254 + ... + 37608319.

It is an arithmetic number, because the mean of its divisors is an integer number (5528344689).

Almost surely, 2^40089900409 is an apocalyptic number.

It is an amenable number.

40089900409 is a deficient number, since it is larger than the sum of its proper divisors (4136857103).

40089900409 is a wasteful number, since it uses less digits than its factorization.

40089900409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75215627.

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 40089900409 in words is "forty billion, eighty-nine million, nine hundred thousand, four hundred nine".