40917940 has 72 divisors (see below), whose sum is σ = 102386592. Its totient is φ = 13688640.

The previous prime is 40917937. The next prime is 40917953. The reversal of 40917940 is 4971904.

40917940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 40917896 and 40917905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41655 + ... + 42625.

It is an arithmetic number, because the mean of its divisors is an integer number (1422036).

Almost surely, 2^40917940 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 40917940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51193296).

40917940 is an abundant number, since it is smaller than the sum of its proper divisors (61468652).

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

40917940 is a wasteful number, since it uses less digits than its factorization.

40917940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037 (or 1028 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 40917940 is about 6396.7132185209. The cubic root of 40917940 is about 344.5915210339.

The spelling of 40917940 in words is "forty million, nine hundred seventeen thousand, nine hundred forty".