9421007 has 4 divisors (see below), whose sum is σ = 9830640. Its totient is φ = 9011376.

The previous prime is 9420997. The next prime is 9421039. The reversal of 9421007 is 7001249.

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

It is a cyclic number.

It is not a de Polignac number, because 9421007 - 2¹⁶ = 9355471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 409609 = 9421007 / (9 + 4 + 2 + 1 + 0 + 0 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9421067) 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 3 ways as a sum of consecutive naturals, for example, 204782 + ... + 204827.

It is an arithmetic number, because the mean of its divisors is an integer number (2457660).

Almost surely, 2^9421007 is an apocalyptic number.

9421007 is a deficient number, since it is larger than the sum of its proper divisors (409633).

9421007 is a wasteful number, since it uses less digits than its factorization.

9421007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409632.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 9421007 is about 3069.3658954253. The cubic root of 9421007 is about 211.2025263582.

The spelling of 9421007 in words is "nine million, four hundred twenty-one thousand, seven".