9953621 has 2 divisors, whose sum is σ = 9953622. Its totient is φ = 9953620.

The previous prime is 9953579. The next prime is 9953711. The reversal of 9953621 is 1263599.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7214596 + 2739025 = 2686^2 + 1655^2 .

It is an emirp because it is prime and its reverse (1263599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9953621 - 2⁶ = 9953557 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9953521) 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 as a sum of consecutive naturals, namely, 4976810 + 4976811.

It is an arithmetic number, because the mean of its divisors is an integer number (4976811).

Almost surely, 2^9953621 is an apocalyptic number.

It is an amenable number.

9953621 is a deficient number, since it is larger than the sum of its proper divisors (1).

9953621 is an equidigital number, since it uses as much as digits as its factorization.

9953621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 35.

The square root of 9953621 is about 3154.9359739938. The cubic root of 9953621 is about 215.1098843380.

The spelling of 9953621 in words is "nine million, nine hundred fifty-three thousand, six hundred twenty-one".