40791036 has 72 divisors (see below), whose sum is σ = 112718032. Its totient is φ = 11404800.

The previous prime is 40791031. The next prime is 40791053. The reversal of 40791036 is 63019704.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40790994 and 40791012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40791031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17796 + ... + 19956.

Almost surely, 2^40791036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40791036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56359016).

40791036 is an abundant number, since it is smaller than the sum of its proper divisors (71926996).

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

40791036 is a wasteful number, since it uses less digits than its factorization.

40791036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2203 (or 2190 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 40791036 is about 6386.7860462051. The cubic root of 40791036 is about 344.2349103072.

It can be divided in two parts, 4079 and 1036, that added together give a palindrome (5115).

The spelling of 40791036 in words is "forty million, seven hundred ninety-one thousand, thirty-six".