4311221979439 has 2 divisors, whose sum is σ = 4311221979440. Its totient is φ = 4311221979438.

The previous prime is 4311221979349. The next prime is 4311221979469. The reversal of 4311221979439 is 9349791221134.

Together with previous prime (4311221979349) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4311221979439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4311221979439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4311221979469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2155610989719 + 2155610989720.

It is an arithmetic number, because the mean of its divisors is an integer number (2155610989720).

Almost surely, 2^{4311221979439} is an apocalyptic number.

4311221979439 is a deficient number, since it is larger than the sum of its proper divisors (1).

4311221979439 is an equidigital number, since it uses as much as digits as its factorization.

4311221979439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 55.

The spelling of 4311221979439 in words is "four trillion, three hundred eleven billion, two hundred twenty-one million, nine hundred seventy-nine thousand, four hundred thirty-nine".