10009621 has 4 divisors (see below), whose sum is σ = 10332544. Its totient is φ = 9686700.

The previous prime is 10009619. The next prime is 10009627. The reversal of 10009621 is 12690001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10009621 - 2¹ = 10009619 is a prime.

It is a super-3 number, since 3×10009621³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10009627) 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, 161415 + ... + 161476.

It is an arithmetic number, because the mean of its divisors is an integer number (2583136).

Almost surely, 2^10009621 is an apocalyptic number.

It is an amenable number.

10009621 is a deficient number, since it is larger than the sum of its proper divisors (322923).

10009621 is an equidigital number, since it uses as much as digits as its factorization.

10009621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322922.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 10009621 is about 3163.7985081228. The cubic root of 10009621 is about 215.5125395775.

Adding to 10009621 its reverse (12690001), we get a palindrome (22699622).

The spelling of 10009621 in words is "ten million, nine thousand, six hundred twenty-one".