39418013 has 2 divisors, whose sum is σ = 39418014. Its totient is φ = 39418012.

The previous prime is 39418009. The next prime is 39418033. The reversal of 39418013 is 31081493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27321529 + 12096484 = 5227^2 + 3478^2 .

It is an emirp because it is prime and its reverse (31081493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39418013 - 2² = 39418009 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39418033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19709006 + 19709007.

It is an arithmetic number, because the mean of its divisors is an integer number (19709007).

Almost surely, 2^39418013 is an apocalyptic number.

It is an amenable number.

39418013 is a deficient number, since it is larger than the sum of its proper divisors (1).

39418013 is an equidigital number, since it uses as much as digits as its factorization.

39418013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 39418013 is about 6278.3766213887. The cubic root of 39418013 is about 340.3284398339.

The spelling of 39418013 in words is "thirty-nine million, four hundred eighteen thousand, thirteen".