41691943 has 2 divisors, whose sum is σ = 41691944. Its totient is φ = 41691942.

The previous prime is 41691919. The next prime is 41691989. The reversal of 41691943 is 34919614.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 41691943 - 2⁵ = 41691911 is a prime.

It is a super-2 number, since 2×41691943² = 3476436222230498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41691043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20845971 + 20845972.

It is an arithmetic number, because the mean of its divisors is an integer number (20845972).

Almost surely, 2^41691943 is an apocalyptic number.

41691943 is a deficient number, since it is larger than the sum of its proper divisors (1).

41691943 is an equidigital number, since it uses as much as digits as its factorization.

41691943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 37.

The square root of 41691943 is about 6456.9298431995. The cubic root of 41691943 is about 346.7507255274.

The spelling of 41691943 in words is "forty-one million, six hundred ninety-one thousand, nine hundred forty-three".