39009121 has 2 divisors, whose sum is σ = 39009122. Its totient is φ = 39009120.

The previous prime is 39009119. The next prime is 39009143. The reversal of 39009121 is 12190093.

39009121 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., 28998225 + 10010896 = 5385^2 + 3164^2 .

It is a cyclic number.

It is not a de Polignac number, because 39009121 - 2¹ = 39009119 is a prime.

Together with 39009119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (39009151) 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, 19504560 + 19504561.

It is an arithmetic number, because the mean of its divisors is an integer number (19504561).

Almost surely, 2^39009121 is an apocalyptic number.

It is an amenable number.

39009121 is a deficient number, since it is larger than the sum of its proper divisors (1).

39009121 is an equidigital number, since it uses as much as digits as its factorization.

39009121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 39009121 is about 6245.7282201518. The cubic root of 39009121 is about 339.1475791976.

The spelling of 39009121 in words is "thirty-nine million, nine thousand, one hundred twenty-one".