40043418 has 16 divisors (see below), whose sum is σ = 81444960. Its totient is φ = 13121456.

The previous prime is 40043417. The next prime is 40043467. The reversal of 40043418 is 81434004.

It is not an unprimeable number, because it can be changed into a prime (40043417) 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, 56205 + ... + 56912.

It is an arithmetic number, because the mean of its divisors is an integer number (5090310).

Almost surely, 2^40043418 is an apocalyptic number.

40043418 is an abundant number, since it is smaller than the sum of its proper divisors (41401542).

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

40043418 is a wasteful number, since it uses less digits than its factorization.

40043418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113181.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 40043418 is about 6327.9868836779. The cubic root of 40043418 is about 342.1188841507.

The spelling of 40043418 in words is "forty million, forty-three thousand, four hundred eighteen".