39216078929 has 2 divisors, whose sum is σ = 39216078930. Its totient is φ = 39216078928.

The previous prime is 39216078829. The next prime is 39216078947. The reversal of 39216078929 is 92987061293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28199477329 + 11016601600 = 167927^2 + 104960^2 .

It is a cyclic number.

It is not a de Polignac number, because 39216078929 - 2³² = 34921111633 is a prime.

It is not a weakly prime, because it can be changed into another prime (39216078949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19608039464 + 19608039465.

It is an arithmetic number, because the mean of its divisors is an integer number (19608039465).

Almost surely, 2^39216078929 is an apocalyptic number.

It is an amenable number.

39216078929 is a deficient number, since it is larger than the sum of its proper divisors (1).

39216078929 is an equidigital number, since it uses as much as digits as its factorization.

39216078929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 56.

The spelling of 39216078929 in words is "thirty-nine billion, two hundred sixteen million, seventy-eight thousand, nine hundred twenty-nine".