1299977448 has 96 divisors (see below), whose sum is σ = 4124273760. Its totient is φ = 337653120.

The previous prime is 1299977429. The next prime is 1299977449. The reversal of 1299977448 is 8447799921.

It is a junction number, because it is equal to n+sod(n) for n = 1299977391 and 1299977400.

It is not an unprimeable number, because it can be changed into a prime (1299977449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37311 + ... + 63182.

It is an arithmetic number, because the mean of its divisors is an integer number (42961185).

Almost surely, 2^1299977448 is an apocalyptic number.

It is an amenable number.

1299977448 is an abundant number, since it is smaller than the sum of its proper divisors (2824296312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1299977448 is a wasteful number, since it uses less digits than its factorization.

1299977448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100527 (or 100516 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 60.

The square root of 1299977448 is about 36055.2000133129. The cubic root of 1299977448 is about 1091.3865719753.

The spelling of 1299977448 in words is "one billion, two hundred ninety-nine million, nine hundred seventy-seven thousand, four hundred forty-eight".