39500947 has 2 divisors, whose sum is σ = 39500948. Its totient is φ = 39500946.

The previous prime is 39500939. The next prime is 39500971. The reversal of 39500947 is 74900593.

It is a weak prime.

It is an emirp because it is prime and its reverse (74900593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39500947 - 2³ = 39500939 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39500927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19750473 + 19750474.

It is an arithmetic number, because the mean of its divisors is an integer number (19750474).

Almost surely, 2^39500947 is an apocalyptic number.

39500947 is a deficient number, since it is larger than the sum of its proper divisors (1).

39500947 is an equidigital number, since it uses as much as digits as its factorization.

39500947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 39500947 is about 6284.9778838115. The cubic root of 39500947 is about 340.5669520026.

The spelling of 39500947 in words is "thirty-nine million, five hundred thousand, nine hundred forty-seven".