9201389 has 4 divisors (see below), whose sum is σ = 9498240. Its totient is φ = 8904540.

The previous prime is 9201341. The next prime is 9201391. The reversal of 9201389 is 9831029.

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 9201389 - 2⁸ = 9201133 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9201089) 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, 148379 + ... + 148440.

It is an arithmetic number, because the mean of its divisors is an integer number (2374560).

Almost surely, 2^9201389 is an apocalyptic number.

It is an amenable number.

9201389 is a deficient number, since it is larger than the sum of its proper divisors (296851).

9201389 is a wasteful number, since it uses less digits than its factorization.

9201389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296850.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 9201389 is about 3033.3791388483. The cubic root of 9201389 is about 209.5484553268.

The spelling of 9201389 in words is "nine million, two hundred one thousand, three hundred eighty-nine".