9311389 has 4 divisors (see below), whose sum is σ = 9716256. Its totient is φ = 8906524.

The previous prime is 9311381. The next prime is 9311399. The reversal of 9311389 is 9831139.

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 9311389 - 2³ = 9311381 is a prime.

It is a Duffinian number.

9311389 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9311381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202399 + ... + 202444.

It is an arithmetic number, because the mean of its divisors is an integer number (2429064).

Almost surely, 2^9311389 is an apocalyptic number.

It is an amenable number.

9311389 is a deficient number, since it is larger than the sum of its proper divisors (404867).

9311389 is a wasteful number, since it uses less digits than its factorization.

9311389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404866.

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

The square root of 9311389 is about 3051.4568651711. The cubic root of 9311389 is about 210.3801805486.

The spelling of 9311389 in words is "nine million, three hundred eleven thousand, three hundred eighty-nine".