41993921 has 2 divisors, whose sum is σ = 41993922. Its totient is φ = 41993920.

The previous prime is 41993911. The next prime is 41993957. The reversal of 41993921 is 12939914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28569025 + 13424896 = 5345^2 + 3664^2 .

It is a cyclic number.

It is not a de Polignac number, because 41993921 - 2²² = 37799617 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (41993911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20996960 + 20996961.

It is an arithmetic number, because the mean of its divisors is an integer number (20996961).

Almost surely, 2^41993921 is an apocalyptic number.

It is an amenable number.

41993921 is a deficient number, since it is larger than the sum of its proper divisors (1).

41993921 is an equidigital number, since it uses as much as digits as its factorization.

41993921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 38.

The square root of 41993921 is about 6480.2716764037. The cubic root of 41993921 is about 347.5858932303.

The spelling of 41993921 in words is "forty-one million, nine hundred ninety-three thousand, nine hundred twenty-one".