11903389 has 4 divisors (see below), whose sum is σ = 12180256. Its totient is φ = 11626524.

The previous prime is 11903387. The next prime is 11903393. The reversal of 11903389 is 98330911.

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.

It is a cyclic number.

It is not a de Polignac number, because 11903389 - 2¹ = 11903387 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 (11903387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138369 + ... + 138454.

It is an arithmetic number, because the mean of its divisors is an integer number (3045064).

Almost surely, 2^11903389 is an apocalyptic number.

It is an amenable number.

11903389 is a deficient number, since it is larger than the sum of its proper divisors (276867).

11903389 is an equidigital number, since it uses as much as digits as its factorization.

11903389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276866.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 11903389 is about 3450.1288381740. The cubic root of 11903389 is about 228.3267923369.

The spelling of 11903389 in words is "eleven million, nine hundred three thousand, three hundred eighty-nine".