9993623 has 2 divisors, whose sum is σ = 9993624. Its totient is φ = 9993622.

The previous prime is 9993611. The next prime is 9993629. The reversal of 9993623 is 3263999.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9993623 - 2²⁰ = 8945047 is a prime.

It is a super-2 number, since 2×9993623² = 199745001332258, which contains 22 as substring.

It is a d-powerful number, because it can be written as 9³ + 9³ + 9³ + 3⁶ + 6⁵ + 2²³ + 3¹³ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9993629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4996811 + 4996812.

It is an arithmetic number, because the mean of its divisors is an integer number (4996812).

Almost surely, 2^9993623 is an apocalyptic number.

9993623 is a deficient number, since it is larger than the sum of its proper divisors (1).

9993623 is an equidigital number, since it uses as much as digits as its factorization.

9993623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78732, while the sum is 41.

The square root of 9993623 is about 3161.2692071382. The cubic root of 9993623 is about 215.3976631650.

The spelling of 9993623 in words is "nine million, nine hundred ninety-three thousand, six hundred twenty-three".