97439999999 has 2 divisors, whose sum is σ = 97440000000. Its totient is φ = 97439999998.

The previous prime is 97439999977. The next prime is 97440000001. The reversal of 97439999999 is 99999993479.

It is a strong prime.

It is an emirp because it is prime and its reverse (99999993479) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97439999999 - 2²⁴ = 97423222783 is a prime.

Together with 97440000001, it forms a pair of twin primes.

It is a Chen prime.

97439999999 is a modest number, since divided by 999999 gives 97439 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 97439999999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97439999599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48719999999 + 48720000000.

It is an arithmetic number, because the mean of its divisors is an integer number (48720000000).

Almost surely, 2^97439999999 is an apocalyptic number.

97439999999 is a deficient number, since it is larger than the sum of its proper divisors (1).

97439999999 is an equidigital number, since it uses as much as digits as its factorization.

97439999999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3615924564, while the sum is 86.

The spelling of 97439999999 in words is "ninety-seven billion, four hundred thirty-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".