40409108 has 24 divisors (see below), whose sum is σ = 73823400. Its totient is φ = 19335680.

The previous prime is 40409101. The next prime is 40409113. The reversal of 40409108 is 80190404.

It can be written as a sum of positive squares in 4 ways, for example, as 10837264 + 29571844 = 3292^2 + 5438^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40409101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6368 + ... + 11016.

It is an arithmetic number, because the mean of its divisors is an integer number (3075975).

Almost surely, 2^40409108 is an apocalyptic number.

It is an amenable number.

40409108 is a deficient number, since it is larger than the sum of its proper divisors (33414292).

40409108 is a wasteful number, since it uses less digits than its factorization.

40409108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4747 (or 4745 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 40409108 is about 6356.8158696001. The cubic root of 40409108 is about 343.1571782015.

The spelling of 40409108 in words is "forty million, four hundred nine thousand, one hundred eight".