39967236998369 has 2 divisors, whose sum is σ = 39967236998370. Its totient is φ = 39967236998368.

The previous prime is 39967236998347. The next prime is 39967236998371. The reversal of 39967236998369 is 96389963276993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35117618224144 + 4849618774225 = 5926012^2 + 2202185^2 .

It is a cyclic number.

It is not a de Polignac number, because 39967236998369 - 2²⁰ = 39967235949793 is a prime.

It is a super-2 number, since 2×39967236998369² (a number of 28 digits) contains 22 as substring.

Together with 39967236998371, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39967236992369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19983618499184 + 19983618499185.

It is an arithmetic number, because the mean of its divisors is an integer number (19983618499185).

Almost surely, 2^{39967236998369} is an apocalyptic number.

It is an amenable number.

39967236998369 is a deficient number, since it is larger than the sum of its proper divisors (1).

39967236998369 is an equidigital number, since it uses as much as digits as its factorization.

39967236998369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38569862016, while the sum is 89.

The spelling of 39967236998369 in words is "thirty-nine trillion, nine hundred sixty-seven billion, two hundred thirty-six million, nine hundred ninety-eight thousand, three hundred sixty-nine".