41894509 has 2 divisors, whose sum is σ = 41894510. Its totient is φ = 41894508.

The previous prime is 41894507. The next prime is 41894527. The reversal of 41894509 is 90549814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36120100 + 5774409 = 6010^2 + 2403^2 .

It is a cyclic number.

It is not a de Polignac number, because 41894509 - 2¹ = 41894507 is a prime.

Together with 41894507, it forms a pair of twin primes.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41894507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20947254 + 20947255.

It is an arithmetic number, because the mean of its divisors is an integer number (20947255).

Almost surely, 2^41894509 is an apocalyptic number.

It is an amenable number.

41894509 is a deficient number, since it is larger than the sum of its proper divisors (1).

41894509 is an equidigital number, since it uses as much as digits as its factorization.

41894509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 41894509 is about 6472.5967740931. The cubic root of 41894509 is about 347.3113970605.

The spelling of 41894509 in words is "forty-one million, eight hundred ninety-four thousand, five hundred nine".