9772391 has 8 divisors (see below), whose sum is σ = 10357200. Its totient is φ = 9204160.

The previous prime is 9772361. The next prime is 9772393. The reversal of 9772391 is 1932779.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9772391 - 2²² = 5578087 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9772393) 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 7 ways as a sum of consecutive naturals, for example, 2921 + ... + 5298.

It is an arithmetic number, because the mean of its divisors is an integer number (1294650).

Almost surely, 2^9772391 is an apocalyptic number.

9772391 is a deficient number, since it is larger than the sum of its proper divisors (584809).

9772391 is a wasteful number, since it uses less digits than its factorization.

9772391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8289.

The product of its digits is 23814, while the sum is 38.

The square root of 9772391 is about 3126.0823725551. The cubic root of 9772391 is about 213.7963459802.

The spelling of 9772391 in words is "nine million, seven hundred seventy-two thousand, three hundred ninety-one".