1299379200 has 264 divisors, whose sum is σ = 4910048832. Its totient is φ = 296878080.

The previous prime is 1299379199. The next prime is 1299379219. The reversal of 1299379200 is 29739921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 536392 + ... + 538808.

Almost surely, 2^1299379200 is an apocalyptic number.

1299379200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1299379200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2455024416).

1299379200 is an abundant number, since it is smaller than the sum of its proper divisors (3610669632).

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

1299379200 is a wasteful number, since it uses less digits than its factorization.

1299379200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2457 (or 2434 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 1299379200 is about 36046.9027795732. The cubic root of 1299379200 is about 1091.2191280405.

The spelling of 1299379200 in words is "one billion, two hundred ninety-nine million, three hundred seventy-nine thousand, two hundred".