1299291952 has 40 divisors (see below), whose sum is σ = 2889100800. Its totient is φ = 554498112.

The previous prime is 1299291947. The next prime is 1299291989. The reversal of 1299291952 is 2591929921.

It is a junction number, because it is equal to n+sod(n) for n = 1299291896 and 1299291905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2499 + ... + 51037.

It is an arithmetic number, because the mean of its divisors is an integer number (72227520).

Almost surely, 2^1299291952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1299291952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1444550400).

1299291952 is an abundant number, since it is smaller than the sum of its proper divisors (1589808848).

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

1299291952 is a wasteful number, since it uses less digits than its factorization.

1299291952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48793 (or 48787 counting only the distinct ones).

The product of its digits is 262440, while the sum is 49.

The square root of 1299291952 is about 36045.6925581962. The cubic root of 1299291952 is about 1091.1947038597.

The spelling of 1299291952 in words is "one billion, two hundred ninety-nine million, two hundred ninety-one thousand, nine hundred fifty-two".