41202809 has 2 divisors, whose sum is σ = 41202810. Its totient is φ = 41202808.

The previous prime is 41202803. The next prime is 41202841. The reversal of 41202809 is 90820214.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21132409 + 20070400 = 4597^2 + 4480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41202809 is a prime.

It is not a weakly prime, because it can be changed into another prime (41202803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20601404 + 20601405.

It is an arithmetic number, because the mean of its divisors is an integer number (20601405).

Almost surely, 2^41202809 is an apocalyptic number.

It is an amenable number.

41202809 is a deficient number, since it is larger than the sum of its proper divisors (1).

41202809 is an equidigital number, since it uses as much as digits as its factorization.

41202809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 41202809 is about 6418.9414236305. The cubic root of 41202809 is about 345.3893496941.

The spelling of 41202809 in words is "forty-one million, two hundred two thousand, eight hundred nine".