39995226629 has 2 divisors, whose sum is σ = 39995226630. Its totient is φ = 39995226628.

The previous prime is 39995226611. The next prime is 39995226637. The reversal of 39995226629 is 92662259993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39412969729 + 582256900 = 198527^2 + 24130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39995226629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39995226659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19997613314 + 19997613315.

It is an arithmetic number, because the mean of its divisors is an integer number (19997613315).

Almost surely, 2^39995226629 is an apocalyptic number.

It is an amenable number.

39995226629 is a deficient number, since it is larger than the sum of its proper divisors (1).

39995226629 is an equidigital number, since it uses as much as digits as its factorization.

39995226629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28343520, while the sum is 62.

The spelling of 39995226629 in words is "thirty-nine billion, nine hundred ninety-five million, two hundred twenty-six thousand, six hundred twenty-nine".