40818829 has 2 divisors, whose sum is σ = 40818830. Its totient is φ = 40818828.

The previous prime is 40818803. The next prime is 40818839. The reversal of 40818829 is 92881804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33663204 + 7155625 = 5802^2 + 2675^2 .

It is a cyclic number.

It is not a de Polignac number, because 40818829 - 2⁹ = 40818317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40818791 and 40818800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40818839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20409414 + 20409415.

It is an arithmetic number, because the mean of its divisors is an integer number (20409415).

Almost surely, 2^40818829 is an apocalyptic number.

It is an amenable number.

40818829 is a deficient number, since it is larger than the sum of its proper divisors (1).

40818829 is an equidigital number, since it uses as much as digits as its factorization.

40818829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 40818829 is about 6388.9614962058. The cubic root of 40818829 is about 344.3130741206.

The spelling of 40818829 in words is "forty million, eight hundred eighteen thousand, eight hundred twenty-nine".