40913013 has 4 divisors (see below), whose sum is σ = 54550688. Its totient is φ = 27275340.

The previous prime is 40913011. The next prime is 40913029. The reversal of 40913013 is 31031904.

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 not a de Polignac number, because 40913013 - 2¹ = 40913011 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 (40913011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6818833 + ... + 6818838.

It is an arithmetic number, because the mean of its divisors is an integer number (13637672).

Almost surely, 2^40913013 is an apocalyptic number.

It is an amenable number.

40913013 is a deficient number, since it is larger than the sum of its proper divisors (13637675).

40913013 is a wasteful number, since it uses less digits than its factorization.

40913013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13637674.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 40913013 is about 6396.3280872701. The cubic root of 40913013 is about 344.5776895248.

Adding to 40913013 its reverse (31031904), we get a palindrome (71944917).

The spelling of 40913013 in words is "forty million, nine hundred thirteen thousand, thirteen".