1349333989 has 4 divisors (see below), whose sum is σ = 1355125356. Its totient is φ = 1343542624.

The previous prime is 1349333987. The next prime is 1349334029. The reversal of 1349333989 is 9893339431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9893339431 = 17 ⋅581961143.

It can be written as a sum of positive squares in 2 ways, for example, as 428697025 + 920636964 = 20705^2 + 30342^2 .

It is a cyclic number.

It is not a de Polignac number, because 1349333989 - 2¹ = 1349333987 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 (1349333987) 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, 2895334 + ... + 2895799.

It is an arithmetic number, because the mean of its divisors is an integer number (338781339).

Almost surely, 2^1349333989 is an apocalyptic number.

It is an amenable number.

1349333989 is a deficient number, since it is larger than the sum of its proper divisors (5791367).

1349333989 is an equidigital number, since it uses as much as digits as its factorization.

1349333989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5791366.

The product of its digits is 1889568, while the sum is 52.

The square root of 1349333989 is about 36733.2817619118. The cubic root of 1349333989 is about 1105.0276711402.

The spelling of 1349333989 in words is "one billion, three hundred forty-nine million, three hundred thirty-three thousand, nine hundred eighty-nine".