40409112 has 32 divisors (see below), whose sum is σ = 101191680. Its totient is φ = 13447200.

The previous prime is 40409101. The next prime is 40409113. The reversal of 40409112 is 21190404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40409113) 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, 19737 + ... + 21687.

It is an arithmetic number, because the mean of its divisors is an integer number (3162240).

Almost surely, 2^40409112 is an apocalyptic number.

It is an amenable number.

40409112 is an abundant number, since it is smaller than the sum of its proper divisors (60782568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40409112 is a wasteful number, since it uses less digits than its factorization.

40409112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823 (or 2819 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 40409112 is about 6356.8161842230. The cubic root of 40409112 is about 343.1571895243.

Adding to 40409112 its reverse (21190404), we get a palindrome (61599516).

The spelling of 40409112 in words is "forty million, four hundred nine thousand, one hundred twelve".