1298109620439 has 6 divisors (see below), whose sum is σ = 1875047229536. Its totient is φ = 865406413620.

The previous prime is 1298109620359. The next prime is 1298109620453. The reversal of 1298109620439 is 9340269018921.

1298109620439 is a `hidden beast` number, since 1 + 2 + 9 + 8 + 1 + 0 + 9 + 620 + 4 + 3 + 9 = 666.

It is not a de Polignac number, because 1298109620439 - 2⁹ = 1298109619927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298109620839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72117201127 + ... + 72117201144.

Almost surely, 2^{1298109620439} is an apocalyptic number.

1298109620439 is a deficient number, since it is larger than the sum of its proper divisors (576937609097).

1298109620439 is a wasteful number, since it uses less digits than its factorization.

1298109620439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144234402277 (or 144234402274 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 1298109620439 in words is "one trillion, two hundred ninety-eight billion, one hundred nine million, six hundred twenty thousand, four hundred thirty-nine".