40218841 has 8 divisors (see below), whose sum is σ = 43361864. Its totient is φ = 37082880.

The previous prime is 40218823. The next prime is 40218859. The reversal of 40218841 is 14881204.

40218841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40218823) and next prime (40218859).

It can be written as a sum of positive squares in 4 ways, for example, as 1218816 + 39000025 = 1104^2 + 6245^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40218841 - 2⁵ = 40218809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40213841) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 21745 + ... + 23521.

It is an arithmetic number, because the mean of its divisors is an integer number (5420233).

Almost surely, 2^40218841 is an apocalyptic number.

It is an amenable number.

40218841 is a deficient number, since it is larger than the sum of its proper divisors (3143023).

40218841 is a wasteful number, since it uses less digits than its factorization.

40218841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3531.

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 40218841 is about 6341.8326215693. The cubic root of 40218841 is about 342.6177434524.

The spelling of 40218841 in words is "forty million, two hundred eighteen thousand, eight hundred forty-one".