40394718 has 108 divisors (see below), whose sum is σ = 110652048. Its totient is φ = 10614240.

The previous prime is 40394671. The next prime is 40394729. The reversal of 40394718 is 81749304.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 148923 + ... + 149193.

It is an arithmetic number, because the mean of its divisors is an integer number (1024556).

Almost surely, 2^40394718 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40394718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55326024).

40394718 is an abundant number, since it is smaller than the sum of its proper divisors (70257330).

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

40394718 is a wasteful number, since it uses less digits than its factorization.

40394718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 40394718 is about 6355.6839128453. The cubic root of 40394718 is about 343.1164397120.

The spelling of 40394718 in words is "forty million, three hundred ninety-four thousand, seven hundred eighteen".