1296398699 has 8 divisors (see below), whose sum is σ = 1376248320. Its totient is φ = 1216948096.

The previous prime is 1296398693. The next prime is 1296398707. The reversal of 1296398699 is 9968936921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1296398699 - 2²⁸ = 1027963243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1296398693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93044 + ... + 106065.

It is an arithmetic number, because the mean of its divisors is an integer number (172031040).

Almost surely, 2^1296398699 is an apocalyptic number.

1296398699 is a deficient number, since it is larger than the sum of its proper divisors (79849621).

1296398699 is a wasteful number, since it uses less digits than its factorization.

1296398699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199509.

The product of its digits is 11337408, while the sum is 62.

The square root of 1296398699 is about 36005.5370602912. The cubic root of 1296398699 is about 1090.3841473479.

The spelling of 1296398699 in words is "one billion, two hundred ninety-six million, three hundred ninety-eight thousand, six hundred ninety-nine".