39516947 has 2 divisors, whose sum is σ = 39516948. Its totient is φ = 39516946.

The previous prime is 39516923. The next prime is 39516991. The reversal of 39516947 is 74961593.

It is an a-pointer prime, because the next prime (39516991) can be obtained adding 39516947 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39516947 - 2²⁰ = 38468371 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 39516898 and 39516907.

It is not a weakly prime, because it can be changed into another prime (39416947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19758473 + 19758474.

It is an arithmetic number, because the mean of its divisors is an integer number (19758474).

Almost surely, 2^39516947 is an apocalyptic number.

39516947 is a deficient number, since it is larger than the sum of its proper divisors (1).

39516947 is an equidigital number, since it uses as much as digits as its factorization.

39516947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 44.

The square root of 39516947 is about 6286.2506313382. The cubic root of 39516947 is about 340.6129284166.

The spelling of 39516947 in words is "thirty-nine million, five hundred sixteen thousand, nine hundred forty-seven".