1347999999 has 4 divisors (see below), whose sum is σ = 1797333336. Its totient is φ = 898666664.

The previous prime is 1347999977. The next prime is 1348000019. The reversal of 1347999999 is 9999997431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1347999999 - 2⁵ = 1347999967 is a prime.

1347999999 is a modest number, since divided by 99999 gives 13479 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1347992999) 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 3 ways as a sum of consecutive naturals, for example, 224666664 + ... + 224666669.

It is an arithmetic number, because the mean of its divisors is an integer number (449333334).

Almost surely, 2^1347999999 is an apocalyptic number.

1347999999 is a deficient number, since it is larger than the sum of its proper divisors (449333337).

1347999999 is an equidigital number, since it uses as much as digits as its factorization.

1347999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449333336.

The product of its digits is 44641044, while the sum is 69.

The square root of 1347999999 is about 36715.1194877533. The cubic root of 1347999999 is about 1104.6633971305.

The spelling of 1347999999 in words is "one billion, three hundred forty-seven million, nine hundred ninety-nine thousand, nine hundred ninety-nine".