97944991222439 has 2 divisors, whose sum is σ = 97944991222440. Its totient is φ = 97944991222438.

The previous prime is 97944991222433. The next prime is 97944991222457. The reversal of 97944991222439 is 93422219944979.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97944991222439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97944991222433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48972495611219 + 48972495611220.

It is an arithmetic number, because the mean of its divisors is an integer number (48972495611220).

Almost surely, 2^{97944991222439} is an apocalyptic number.

97944991222439 is a deficient number, since it is larger than the sum of its proper divisors (1).

97944991222439 is an equidigital number, since it uses as much as digits as its factorization.

97944991222439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 634894848, while the sum is 74.

The spelling of 97944991222439 in words is "ninety-seven trillion, nine hundred forty-four billion, nine hundred ninety-one million, two hundred twenty-two thousand, four hundred thirty-nine".