41999869 has 2 divisors, whose sum is σ = 41999870. Its totient is φ = 41999868.

The previous prime is 41999857. The next prime is 41999891. The reversal of 41999869 is 96899914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28494244 + 13505625 = 5338^2 + 3675^2 .

It is a cyclic number.

It is not a de Polignac number, because 41999869 - 2¹⁷ = 41868797 is a prime.

It is a super-2 number, since 2×41999869² = 3527977992034322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41999819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20999934 + 20999935.

It is an arithmetic number, because the mean of its divisors is an integer number (20999935).

Almost surely, 2^41999869 is an apocalyptic number.

It is an amenable number.

41999869 is a deficient number, since it is larger than the sum of its proper divisors (1).

41999869 is an equidigital number, since it uses as much as digits as its factorization.

41999869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1259712, while the sum is 55.

The square root of 41999869 is about 6480.7305915306. The cubic root of 41999869 is about 347.6023030918.

The spelling of 41999869 in words is "forty-one million, nine hundred ninety-nine thousand, eight hundred sixty-nine".