39747630947 has 2 divisors, whose sum is σ = 39747630948. Its totient is φ = 39747630946.

The previous prime is 39747630943. The next prime is 39747630959. The reversal of 39747630947 is 74903674793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39747630947 - 2² = 39747630943 is a prime.

It is not a weakly prime, because it can be changed into another prime (39747630943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19873815473 + 19873815474.

It is an arithmetic number, because the mean of its divisors is an integer number (19873815474).

Almost surely, 2^39747630947 is an apocalyptic number.

39747630947 is a deficient number, since it is larger than the sum of its proper divisors (1).

39747630947 is an equidigital number, since it uses as much as digits as its factorization.

39747630947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24004512, while the sum is 59.

The spelling of 39747630947 in words is "thirty-nine billion, seven hundred forty-seven million, six hundred thirty thousand, nine hundred forty-seven".