39390907 has 2 divisors, whose sum is σ = 39390908. Its totient is φ = 39390906.

The previous prime is 39390893. The next prime is 39390913. The reversal of 39390907 is 70909393.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (70909393) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39390907 - 2⁷ = 39390779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39390907.

It is not a weakly prime, because it can be changed into another prime (39390947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19695453 + 19695454.

It is an arithmetic number, because the mean of its divisors is an integer number (19695454).

Almost surely, 2^39390907 is an apocalyptic number.

39390907 is a deficient number, since it is larger than the sum of its proper divisors (1).

39390907 is an equidigital number, since it uses as much as digits as its factorization.

39390907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45927, while the sum is 40.

The square root of 39390907 is about 6276.2175711172. The cubic root of 39390907 is about 340.2504124100.

The spelling of 39390907 in words is "thirty-nine million, three hundred ninety thousand, nine hundred seven".