40339900609 has 4 divisors (see below), whose sum is σ = 40341749760. Its totient is φ = 40338051460.

The previous prime is 40339900591. The next prime is 40339900621. The reversal of 40339900609 is 90600993304.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40339900609 - 2⁷ = 40339900481 is a prime.

It is a super-2 number, since 2×40339900609² (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 (40339900649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 891457 + ... + 935614.

It is an arithmetic number, because the mean of its divisors is an integer number (10085437440).

Almost surely, 2^40339900609 is an apocalyptic number.

It is an amenable number.

40339900609 is a deficient number, since it is larger than the sum of its proper divisors (1849151).

40339900609 is a wasteful number, since it uses less digits than its factorization.

40339900609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849150.

The product of its (nonzero) digits is 157464, while the sum is 43.

The spelling of 40339900609 in words is "forty billion, three hundred thirty-nine million, nine hundred thousand, six hundred nine".