41812409 has 4 divisors (see below), whose sum is σ = 42341760. Its totient is φ = 41283060.

The previous prime is 41812399. The next prime is 41812439. The reversal of 41812409 is 90421814.

41812409 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 41812409 - 2⁸ = 41812153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41812439) 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, 264557 + ... + 264714.

It is an arithmetic number, because the mean of its divisors is an integer number (10585440).

Almost surely, 2^41812409 is an apocalyptic number.

It is an amenable number.

41812409 is a deficient number, since it is larger than the sum of its proper divisors (529351).

41812409 is an equidigital number, since it uses as much as digits as its factorization.

41812409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529350.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 41812409 is about 6466.2515416584. The cubic root of 41812409 is about 347.0843751667.

The spelling of 41812409 in words is "forty-one million, eight hundred twelve thousand, four hundred nine".