9275991 has 4 divisors (see below), whose sum is σ = 12367992. Its totient is φ = 6183992.

The previous prime is 9275989. The next prime is 9275993. The reversal of 9275991 is 1995729.

9275991 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (9275989) and next prime (9275993).

It is a cyclic number.

It is not a de Polignac number, because 9275991 - 2¹ = 9275989 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9275993) 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, 1545996 + ... + 1546001.

It is an arithmetic number, because the mean of its divisors is an integer number (3091998).

Almost surely, 2^9275991 is an apocalyptic number.

9275991 is a deficient number, since it is larger than the sum of its proper divisors (3092001).

9275991 is a wasteful number, since it uses less digits than its factorization.

9275991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3092000.

The product of its digits is 51030, while the sum is 42.

The square root of 9275991 is about 3045.6511619028. The cubic root of 9275991 is about 210.1132495730.

The spelling of 9275991 in words is "nine million, two hundred seventy-five thousand, nine hundred ninety-one".