39894740099 has 2 divisors, whose sum is σ = 39894740100. Its totient is φ = 39894740098.

The previous prime is 39894740063. The next prime is 39894740117. The reversal of 39894740099 is 99004749893.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39894740099 - 2¹² = 39894736003 is a prime.

It is not a weakly prime, because it can be changed into another prime (39894740009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19947370049 + 19947370050.

It is an arithmetic number, because the mean of its divisors is an integer number (19947370050).

Almost surely, 2^39894740099 is an apocalyptic number.

39894740099 is a deficient number, since it is larger than the sum of its proper divisors (1).

39894740099 is an equidigital number, since it uses as much as digits as its factorization.

39894740099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17635968, while the sum is 62.

The spelling of 39894740099 in words is "thirty-nine billion, eight hundred ninety-four million, seven hundred forty thousand, ninety-nine".