1344688899 has 16 divisors (see below), whose sum is σ = 1901076480. Its totient is φ = 842529920.

The previous prime is 1344688897. The next prime is 1344688909. The reversal of 1344688899 is 9988864431.

It is a Cunningham number, because it is equal to 36670²-1.

It is a cyclic number.

It is not a de Polignac number, because 1344688899 - 2¹ = 1344688897 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1344688897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18334 + ... + 55004.

It is an arithmetic number, because the mean of its divisors is an integer number (118817280).

Almost surely, 2^1344688899 is an apocalyptic number.

1344688899 is a deficient number, since it is larger than the sum of its proper divisors (556387581).

1344688899 is a wasteful number, since it uses less digits than its factorization.

1344688899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37410.

The product of its digits is 11943936, while the sum is 60.

The square root of 1344688899 is about 36669.9999863649. Note that the first 4 decimals coincide. The cubic root of 1344688899 is about 1103.7581919277.

The spelling of 1344688899 in words is "one billion, three hundred forty-four million, six hundred eighty-eight thousand, eight hundred ninety-nine".