39995226679 has 2 divisors, whose sum is σ = 39995226680. Its totient is φ = 39995226678.

The previous prime is 39995226673. The next prime is 39995226767. The reversal of 39995226679 is 97662259993.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39995226679 - 2³ = 39995226671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39995226671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19997613339 + 19997613340.

It is an arithmetic number, because the mean of its divisors is an integer number (19997613340).

Almost surely, 2^39995226679 is an apocalyptic number.

39995226679 is a deficient number, since it is larger than the sum of its proper divisors (1).

39995226679 is an equidigital number, since it uses as much as digits as its factorization.

39995226679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 99202320, while the sum is 67.

The spelling of 39995226679 in words is "thirty-nine billion, nine hundred ninety-five million, two hundred twenty-six thousand, six hundred seventy-nine".