41691899 has 2 divisors, whose sum is σ = 41691900. Its totient is φ = 41691898.

The previous prime is 41691887. The next prime is 41691901. The reversal of 41691899 is 99819614.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 41691899 - 2¹² = 41687803 is a prime.

Together with 41691901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (41691809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20845949 + 20845950.

It is an arithmetic number, because the mean of its divisors is an integer number (20845950).

Almost surely, 2^41691899 is an apocalyptic number.

41691899 is a deficient number, since it is larger than the sum of its proper divisors (1).

41691899 is an equidigital number, since it uses as much as digits as its factorization.

41691899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 47.

The square root of 41691899 is about 6456.9264360065. The cubic root of 41691899 is about 346.7506035451.

The spelling of 41691899 in words is "forty-one million, six hundred ninety-one thousand, eight hundred ninety-nine".