10388389 has 4 divisors (see below), whose sum is σ = 11332800. Its totient is φ = 9443980.

The previous prime is 10388381. The next prime is 10388419. The reversal of 10388389 is 98388301.

10388389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10388389 - 2³ = 10388381 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10388381) 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, 472189 + ... + 472210.

It is an arithmetic number, because the mean of its divisors is an integer number (2833200).

Almost surely, 2^10388389 is an apocalyptic number.

It is an amenable number.

10388389 is a deficient number, since it is larger than the sum of its proper divisors (944411).

10388389 is an equidigital number, since it uses as much as digits as its factorization.

10388389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944410.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 10388389 is about 3223.1023874522. The cubic root of 10388389 is about 218.1973145506.

The spelling of 10388389 in words is "ten million, three hundred eighty-eight thousand, three hundred eighty-nine".