1349189999 has 4 divisors (see below), whose sum is σ = 1350386160. Its totient is φ = 1347993840.

The previous prime is 1349189987. The next prime is 1349190041. The reversal of 1349189999 is 9999819431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9999819431 = 7 ⋅1428545633.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1349189999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1349189969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 596387 + ... + 598644.

It is an arithmetic number, because the mean of its divisors is an integer number (337596540).

Almost surely, 2^1349189999 is an apocalyptic number.

1349189999 is a deficient number, since it is larger than the sum of its proper divisors (1196161).

1349189999 is a wasteful number, since it uses less digits than its factorization.

1349189999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196160.

The product of its digits is 5668704, while the sum is 62.

The square root of 1349189999 is about 36731.3217703910. The cubic root of 1349189999 is about 1104.9883632061.

The spelling of 1349189999 in words is "one billion, three hundred forty-nine million, one hundred eighty-nine thousand, nine hundred ninety-nine".