9642271 has 4 divisors (see below), whose sum is σ = 9953344. Its totient is φ = 9331200.

The previous prime is 9642263. The next prime is 9642287. The reversal of 9642271 is 1722469.

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

It is a 9-Lehmer number, since φ(9642271) divides (9642271-1)⁹.

It is a cyclic number.

It is not a de Polignac number, because 9642271 - 2³ = 9642263 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 311041 = 9642271 / (9 + 6 + 4 + 2 + 2 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9642211) 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, 155490 + ... + 155551.

It is an arithmetic number, because the mean of its divisors is an integer number (2488336).

Almost surely, 2^9642271 is an apocalyptic number.

9642271 is a deficient number, since it is larger than the sum of its proper divisors (311073).

9642271 is a wasteful number, since it uses less digits than its factorization.

9642271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311072.

The product of its digits is 6048, while the sum is 31.

The square root of 9642271 is about 3105.2006376400. The cubic root of 9642271 is about 212.8431990497.

The spelling of 9642271 in words is "nine million, six hundred forty-two thousand, two hundred seventy-one".