8939929106509 has 2 divisors, whose sum is σ = 8939929106510. Its totient is φ = 8939929106508.

The previous prime is 8939929106483. The next prime is 8939929106569. The reversal of 8939929106509 is 9056019299398.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7249206229225 + 1690722877284 = 2692435^2 + 1300278^2 .

It is a cyclic number.

It is not a de Polignac number, because 8939929106509 - 2⁵ = 8939929106477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8939929106569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4469964553254 + 4469964553255.

It is an arithmetic number, because the mean of its divisors is an integer number (4469964553255).

Almost surely, 2^{8939929106509} is an apocalyptic number.

It is an amenable number.

8939929106509 is a deficient number, since it is larger than the sum of its proper divisors (1).

8939929106509 is an equidigital number, since it uses as much as digits as its factorization.

8939929106509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 85030560, while the sum is 70.

The spelling of 8939929106509 in words is "eight trillion, nine hundred thirty-nine billion, nine hundred twenty-nine million, one hundred six thousand, five hundred nine".