41989819 has 4 divisors (see below), whose sum is σ = 42565096. Its totient is φ = 41414544.

The previous prime is 41989817. The next prime is 41989837. The reversal of 41989819 is 91898914.

41989819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91898914 = 2 ⋅45949457.

It is a cyclic number.

It is not a de Polignac number, because 41989819 - 2¹ = 41989817 is a prime.

It is a super-2 number, since 2×41989819² = 3526289799305522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41989811) 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 3 ways as a sum of consecutive naturals, for example, 287529 + ... + 287674.

It is an arithmetic number, because the mean of its divisors is an integer number (10641274).

Almost surely, 2^41989819 is an apocalyptic number.

41989819 is a deficient number, since it is larger than the sum of its proper divisors (575277).

41989819 is an equidigital number, since it uses as much as digits as its factorization.

41989819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575276.

The product of its digits is 186624, while the sum is 49.

The square root of 41989819 is about 6479.9551695980. The cubic root of 41989819 is about 347.5745753718.

The spelling of 41989819 in words is "forty-one million, nine hundred eighty-nine thousand, eight hundred nineteen".