1299810996 has 96 divisors (see below), whose sum is σ = 3695932800. Its totient is φ = 391772160.

The previous prime is 1299810989. The next prime is 1299811021. The reversal of 1299810996 is 6990189921.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 226450 + ... + 232118.

It is an arithmetic number, because the mean of its divisors is an integer number (38499300).

Almost surely, 2^1299810996 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 1299810996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1847966400).

1299810996 is an abundant number, since it is smaller than the sum of its proper divisors (2396121804).

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

1299810996 is a wasteful number, since it uses less digits than its factorization.

1299810996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5886 (or 5878 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 54.

The square root of 1299810996 is about 36052.8916454700. The cubic root of 1299810996 is about 1091.3399888001.

The spelling of 1299810996 in words is "one billion, two hundred ninety-nine million, eight hundred ten thousand, nine hundred ninety-six".