17940841 has 2 divisors, whose sum is σ = 17940842. Its totient is φ = 17940840.

The previous prime is 17940833. The next prime is 17940859. The reversal of 17940841 is 14804971.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11289600 + 6651241 = 3360^2 + 2579^2 .

It is a cyclic number.

It is not a de Polignac number, because 17940841 - 2³ = 17940833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17940797 and 17940806.

It is not a weakly prime, because it can be changed into another prime (17940641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8970420 + 8970421.

It is an arithmetic number, because the mean of its divisors is an integer number (8970421).

Almost surely, 2^17940841 is an apocalyptic number.

It is an amenable number.

17940841 is a deficient number, since it is larger than the sum of its proper divisors (1).

17940841 is an equidigital number, since it uses as much as digits as its factorization.

17940841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 17940841 is about 4235.6629941486. The cubic root of 17940841 is about 261.7867123774.

It can be divided in two parts, 17940 and 841, that added together give a palindrome (18781).

The spelling of 17940841 in words is "seventeen million, nine hundred forty thousand, eight hundred forty-one".