9672391 has 2 divisors, whose sum is σ = 9672392. Its totient is φ = 9672390.

The previous prime is 9672389. The next prime is 9672409. The reversal of 9672391 is 1932769.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9672391 - 2¹ = 9672389 is a prime.

Together with 9672389, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9672391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9672331) 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 as a sum of consecutive naturals, namely, 4836195 + 4836196.

It is an arithmetic number, because the mean of its divisors is an integer number (4836196).

Almost surely, 2^9672391 is an apocalyptic number.

9672391 is a deficient number, since it is larger than the sum of its proper divisors (1).

9672391 is an equidigital number, since it uses as much as digits as its factorization.

9672391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 37.

The square root of 9672391 is about 3110.0467842140. The cubic root of 9672391 is about 213.0645913421.

It can be divided in two parts, 9 and 672391, that added together give a square (672400 = 820²).

The spelling of 9672391 in words is "nine million, six hundred seventy-two thousand, three hundred ninety-one".