1383386909 has 4 divisors (see below), whose sum is σ = 1384656000. Its totient is φ = 1382117820.

The previous prime is 1383386899. The next prime is 1383386929. The reversal of 1383386909 is 9096833831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9096833831 = 76949 ⋅118219.

It is a cyclic number.

It is not a de Polignac number, because 1383386909 - 2¹² = 1383382813 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 (1383386929) 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, 632909 + ... + 635090.

It is an arithmetic number, because the mean of its divisors is an integer number (346164000).

Almost surely, 2^1383386909 is an apocalyptic number.

It is an amenable number.

1383386909 is a deficient number, since it is larger than the sum of its proper divisors (1269091).

1383386909 is a wasteful number, since it uses less digits than its factorization.

1383386909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269090.

The product of its (nonzero) digits is 839808, while the sum is 50.

The square root of 1383386909 is about 37193.9095686377. The cubic root of 1383386909 is about 1114.2463510930.

The spelling of 1383386909 in words is "one billion, three hundred eighty-three million, three hundred eighty-six thousand, nine hundred nine".