40439101 has 2 divisors, whose sum is σ = 40439102. Its totient is φ = 40439100.

The previous prime is 40439081. The next prime is 40439149. The reversal of 40439101 is 10193404.

40439101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28196100 + 12243001 = 5310^2 + 3499^2 .

It is a cyclic number.

It is not a de Polignac number, because 40439101 - 2⁹ = 40438589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40439701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20219550 + 20219551.

It is an arithmetic number, because the mean of its divisors is an integer number (20219551).

Almost surely, 2^40439101 is an apocalyptic number.

It is an amenable number.

40439101 is a deficient number, since it is larger than the sum of its proper divisors (1).

40439101 is an equidigital number, since it uses as much as digits as its factorization.

40439101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 40439101 is about 6359.1745533520. The cubic root of 40439101 is about 343.2420581405.

The spelling of 40439101 in words is "forty million, four hundred thirty-nine thousand, one hundred one".