40840011 has 16 divisors (see below), whose sum is σ = 61063200. Its totient is φ = 26974944.

The previous prime is 40839983. The next prime is 40840021. The reversal of 40840011 is 11004804.

It is not a de Polignac number, because 40840011 - 2⁵ = 40839979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40840021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3996 + ... + 9881.

It is an arithmetic number, because the mean of its divisors is an integer number (3816450).

Almost surely, 2^40840011 is an apocalyptic number.

40840011 is a deficient number, since it is larger than the sum of its proper divisors (20223189).

40840011 is a wasteful number, since it uses less digits than its factorization.

40840011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13995 (or 13989 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 40840011 is about 6390.6189841047. The cubic root of 40840011 is about 344.3726216262.

Adding to 40840011 its reverse (11004804), we get a palindrome (51844815).

The spelling of 40840011 in words is "forty million, eight hundred forty thousand, eleven".