41781329 has 2 divisors, whose sum is σ = 41781330. Its totient is φ = 41781328.

The previous prime is 41781281. The next prime is 41781343. The reversal of 41781329 is 92318714.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41731600 + 49729 = 6460^2 + 223^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41781329 is a prime.

It is not a weakly prime, because it can be changed into another prime (41781379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20890664 + 20890665.

It is an arithmetic number, because the mean of its divisors is an integer number (20890665).

Almost surely, 2^41781329 is an apocalyptic number.

It is an amenable number.

41781329 is a deficient number, since it is larger than the sum of its proper divisors (1).

41781329 is an equidigital number, since it uses as much as digits as its factorization.

41781329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 41781329 is about 6463.8478478380. The cubic root of 41781329 is about 346.9983555969.

The spelling of 41781329 in words is "forty-one million, seven hundred eighty-one thousand, three hundred twenty-nine".