1299543344 has 40 divisors (see below), whose sum is σ = 2772002640. Its totient is φ = 585273600.

The previous prime is 1299543337. The next prime is 1299543347. The reversal of 1299543344 is 4433459921.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 1299543295 and 1299543304.

It is not an unprimeable number, because it can be changed into a prime (1299543347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14687 + ... + 53054.

It is an arithmetic number, because the mean of its divisors is an integer number (69300066).

Almost surely, 2^1299543344 is an apocalyptic number.

It is an amenable number.

1299543344 is an abundant number, since it is smaller than the sum of its proper divisors (1472459296).

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

1299543344 is a wasteful number, since it uses less digits than its factorization.

1299543344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67869 (or 67863 counting only the distinct ones).

The product of its digits is 466560, while the sum is 44.

The square root of 1299543344 is about 36049.1795190959. The cubic root of 1299543344 is about 1091.2650755029.

The spelling of 1299543344 in words is "one billion, two hundred ninety-nine million, five hundred forty-three thousand, three hundred forty-four".