9256391 has 4 divisors (see below), whose sum is σ = 9296352. Its totient is φ = 9216432.

The previous prime is 9256367. The next prime is 9256399. The reversal of 9256391 is 1936529.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9256391 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 (9256399) 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, 19631 + ... + 20096.

It is an arithmetic number, because the mean of its divisors is an integer number (2324088).

Almost surely, 2^9256391 is an apocalyptic number.

9256391 is a deficient number, since it is larger than the sum of its proper divisors (39961).

9256391 is a wasteful number, since it uses less digits than its factorization.

9256391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39960.

The product of its digits is 14580, while the sum is 35.

The square root of 9256391 is about 3042.4317576570. The cubic root of 9256391 is about 209.9651567286.

The spelling of 9256391 in words is "nine million, two hundred fifty-six thousand, three hundred ninety-one".