1439788861993 has 2 divisors, whose sum is σ = 1439788861994. Its totient is φ = 1439788861992.

The previous prime is 1439788861957. The next prime is 1439788862123. The reversal of 1439788861993 is 3991688879341.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1015918853184 + 423870008809 = 1007928^2 + 651053^2 .

It is a cyclic number.

It is not a de Polignac number, because 1439788861993 - 2¹³ = 1439788853801 is a prime.

It is not a weakly prime, because it can be changed into another prime (1439788865993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719894430996 + 719894430997.

It is an arithmetic number, because the mean of its divisors is an integer number (719894430997).

Almost surely, 2^{1439788861993} is an apocalyptic number.

It is an amenable number.

1439788861993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1439788861993 is an equidigital number, since it uses as much as digits as its factorization.

1439788861993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564350976, while the sum is 76.

The spelling of 1439788861993 in words is "one trillion, four hundred thirty-nine billion, seven hundred eighty-eight million, eight hundred sixty-one thousand, nine hundred ninety-three".