41988109 has 2 divisors, whose sum is σ = 41988110. Its totient is φ = 41988108.

The previous prime is 41988101. The next prime is 41988131. The reversal of 41988109 is 90188914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37785609 + 4202500 = 6147^2 + 2050^2 .

It is a cyclic number.

It is not a de Polignac number, because 41988109 - 2³ = 41988101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41988101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20994054 + 20994055.

It is an arithmetic number, because the mean of its divisors is an integer number (20994055).

Almost surely, 2^41988109 is an apocalyptic number.

It is an amenable number.

41988109 is a deficient number, since it is larger than the sum of its proper divisors (1).

41988109 is an equidigital number, since it uses as much as digits as its factorization.

41988109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 41988109 is about 6479.8232228974. The cubic root of 41988109 is about 347.5698570805.

The spelling of 41988109 in words is "forty-one million, nine hundred eighty-eight thousand, one hundred nine".