40009313 has 16 divisors (see below), whose sum is σ = 44328960. Its totient is φ = 35979840.

The previous prime is 40009303. The next prime is 40009337. The reversal of 40009313 is 31390004.

40009313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40009313 - 2¹⁰ = 40008289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40009303) 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 15 ways as a sum of consecutive naturals, for example, 506408 + ... + 506486.

It is an arithmetic number, because the mean of its divisors is an integer number (2770560).

Almost surely, 2^40009313 is an apocalyptic number.

It is an amenable number.

40009313 is a deficient number, since it is larger than the sum of its proper divisors (4319647).

40009313 is an frugal number, since it uses more digits than its factorization.

40009313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 40009313 is about 6325.2915347832. The cubic root of 40009313 is about 342.0217289524.

Adding to 40009313 its reverse (31390004), we get a palindrome (71399317).

The spelling of 40009313 in words is "forty million, nine thousand, three hundred thirteen".