40939718 has 16 divisors (see below), whose sum is σ = 64879920. Its totient is φ = 19321056.

The previous prime is 40939711. The next prime is 40939721. The reversal of 40939718 is 81793904.

It is a happy number.

It is a super-3 number, since 3×40939718³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40939711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9296 + ... + 12972.

It is an arithmetic number, because the mean of its divisors is an integer number (4054995).

Almost surely, 2^40939718 is an apocalyptic number.

40939718 is a deficient number, since it is larger than the sum of its proper divisors (23940202).

40939718 is a wasteful number, since it uses less digits than its factorization.

40939718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3991.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 40939718 is about 6398.4152725499. The cubic root of 40939718 is about 344.6526448600.

The spelling of 40939718 in words is "forty million, nine hundred thirty-nine thousand, seven hundred eighteen".