41591789 has 2 divisors, whose sum is σ = 41591790. Its totient is φ = 41591788.

The previous prime is 41591783. The next prime is 41591807. The reversal of 41591789 is 98719514.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38812900 + 2778889 = 6230^2 + 1667^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41591789 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41591783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20795894 + 20795895.

It is an arithmetic number, because the mean of its divisors is an integer number (20795895).

Almost surely, 2^41591789 is an apocalyptic number.

It is an amenable number.

41591789 is a deficient number, since it is larger than the sum of its proper divisors (1).

41591789 is an equidigital number, since it uses as much as digits as its factorization.

41591789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 44.

The square root of 41591789 is about 6449.1696364726. The cubic root of 41591789 is about 346.4728435552.

The spelling of 41591789 in words is "forty-one million, five hundred ninety-one thousand, seven hundred eighty-nine".