40061109 has 16 divisors (see below), whose sum is σ = 59143680. Its totient is φ = 23915760.

The previous prime is 40061089. The next prime is 40061113. The reversal of 40061109 is 90116004.

It is not a de Polignac number, because 40061109 - 2⁹ = 40060597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40061149) 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, 6849 + ... + 11270.

It is an arithmetic number, because the mean of its divisors is an integer number (3696480).

Almost surely, 2^40061109 is an apocalyptic number.

It is an amenable number.

40061109 is a deficient number, since it is larger than the sum of its proper divisors (19082571).

40061109 is a wasteful number, since it uses less digits than its factorization.

40061109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18200.

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

The square root of 40061109 is about 6329.3845672387. The cubic root of 40061109 is about 342.1692589221.

It can be divided in two parts, 4006 and 1109, that added together give a palindrome (5115).

The spelling of 40061109 in words is "forty million, sixty-one thousand, one hundred nine".