1312999448 has 8 divisors (see below), whose sum is σ = 2461873980. Its totient is φ = 656499720.

The previous prime is 1312999439. The next prime is 1312999463. The reversal of 1312999448 is 8449992131.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1312999396 and 1312999405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82062458 + ... + 82062473.

Almost surely, 2^1312999448 is an apocalyptic number.

It is an amenable number.

1312999448 is a deficient number, since it is larger than the sum of its proper divisors (1148874532).

1312999448 is a wasteful number, since it uses less digits than its factorization.

1312999448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164124937 (or 164124933 counting only the distinct ones).

The product of its digits is 559872, while the sum is 50.

The square root of 1312999448 is about 36235.3342471130. The cubic root of 1312999448 is about 1095.0186462217.

The spelling of 1312999448 in words is "one billion, three hundred twelve million, nine hundred ninety-nine thousand, four hundred forty-eight".