40043718 has 96 divisors (see below), whose sum is σ = 104412672. Its totient is φ = 10929600.

The previous prime is 40043701. The next prime is 40043741. The reversal of 40043718 is 81734004.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40043691 and 40043700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120813 + ... + 121143.

It is an arithmetic number, because the mean of its divisors is an integer number (1087632).

Almost surely, 2^40043718 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40043718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52206336).

40043718 is an abundant number, since it is smaller than the sum of its proper divisors (64368954).

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

40043718 is a wasteful number, since it uses less digits than its factorization.

40043718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 40043718 is about 6328.0105878546. The cubic root of 40043718 is about 342.1197385184.

The spelling of 40043718 in words is "forty million, forty-three thousand, seven hundred eighteen".