40006911 has 16 divisors (see below), whose sum is σ = 61964288. Its totient is φ = 22485600.

The previous prime is 40006907. The next prime is 40006919. The reversal of 40006911 is 11960004.

It is not a de Polignac number, because 40006911 - 2² = 40006907 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40006919) 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, 14335 + ... + 16896.

It is an arithmetic number, because the mean of its divisors is an integer number (3872768).

Almost surely, 2^40006911 is an apocalyptic number.

40006911 is a deficient number, since it is larger than the sum of its proper divisors (21957377).

40006911 is a wasteful number, since it uses less digits than its factorization.

40006911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31302.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 40006911 is about 6325.1016592621. The cubic root of 40006911 is about 342.0148842741.

40006911 divided by its sum of digits (21) gives a palindrome (1905091).

Adding to 40006911 its reverse (11960004), we get a palindrome (51966915).

The spelling of 40006911 in words is "forty million, six thousand, nine hundred eleven".