9368921 has 4 divisors (see below), whose sum is σ = 9920052. Its totient is φ = 8817792.

The previous prime is 9368911. The next prime is 9368923. The reversal of 9368921 is 1298639.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1298639 = 1109 ⋅1171.

It can be written as a sum of positive squares in 2 ways, for example, as 3312400 + 6056521 = 1820^2 + 2461^2 .

It is a cyclic number.

It is not a de Polignac number, because 9368921 - 2¹⁴ = 9352537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9368923) 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, 275540 + ... + 275573.

It is an arithmetic number, because the mean of its divisors is an integer number (2480013).

Almost surely, 2^9368921 is an apocalyptic number.

It is an amenable number.

9368921 is a deficient number, since it is larger than the sum of its proper divisors (551131).

9368921 is a wasteful number, since it uses less digits than its factorization.

9368921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551130.

The product of its digits is 23328, while the sum is 38.

The square root of 9368921 is about 3060.8693209610. The cubic root of 9368921 is about 210.8125811185.

The spelling of 9368921 in words is "nine million, three hundred sixty-eight thousand, nine hundred twenty-one".