39050009 has 2 divisors, whose sum is σ = 39050010. Its totient is φ = 39050008.

The previous prime is 39049993. The next prime is 39050017. The reversal of 39050009 is 90005093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27793984 + 11256025 = 5272^2 + 3355^2 .

It is an emirp because it is prime and its reverse (90005093) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39050009 - 2⁴ = 39049993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39050009.

It is not a weakly prime, because it can be changed into another prime (39050509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19525004 + 19525005.

It is an arithmetic number, because the mean of its divisors is an integer number (19525005).

Almost surely, 2^39050009 is an apocalyptic number.

It is an amenable number.

39050009 is a deficient number, since it is larger than the sum of its proper divisors (1).

39050009 is an equidigital number, since it uses as much as digits as its factorization.

39050009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1215, while the sum is 26.

The square root of 39050009 is about 6249.0006401024. Note that the first 3 decimals coincide. The cubic root of 39050009 is about 339.2660320423.

The spelling of 39050009 in words is "thirty-nine million, fifty thousand, nine".