1299001299 has 16 divisors (see below), whose sum is σ = 1753366944. Its totient is φ = 855360000.

The previous prime is 1299001273. The next prime is 1299001307. The reversal of 1299001299 is 9921009921.

It is not a de Polignac number, because 1299001299 - 2⁵ = 1299001267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1299001299.

It is not an unprimeable number, because it can be changed into a prime (1299001499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126249 + ... + 136149.

It is an arithmetic number, because the mean of its divisors is an integer number (109585434).

Almost surely, 2^1299001299 is an apocalyptic number.

1299001299 is a deficient number, since it is larger than the sum of its proper divisors (454365645).

1299001299 is a wasteful number, since it uses less digits than its factorization.

1299001299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10438.

The product of its (nonzero) digits is 26244, while the sum is 42.

The square root of 1299001299 is about 36041.6606026970. The cubic root of 1299001299 is about 1091.1133306507.

It can be divided in two parts, 129900 and 1299, that multiplied together give a square (168740100 = 12990²).

The spelling of 1299001299 in words is "one billion, two hundred ninety-nine million, one thousand, two hundred ninety-nine".