99923653 has 2 divisors, whose sum is σ = 99923654. Its totient is φ = 99923652.

The previous prime is 99923651. The next prime is 99923657. The reversal of 99923653 is 35632999.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74943649 + 24980004 = 8657^2 + 4998^2 .

It is a cyclic number.

It is not a de Polignac number, because 99923653 - 2¹ = 99923651 is a prime.

Together with 99923651, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99923651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49961826 + 49961827.

It is an arithmetic number, because the mean of its divisors is an integer number (49961827).

Almost surely, 2^99923653 is an apocalyptic number.

It is an amenable number.

99923653 is a deficient number, since it is larger than the sum of its proper divisors (1).

99923653 is an equidigital number, since it uses as much as digits as its factorization.

99923653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 393660, while the sum is 46.

The square root of 99923653 is about 9996.1819211137. The cubic root of 99923653 is about 464.0407294930.

It can be divided in two parts, 99923 and 653, that added together give a triangular number (100576 = T₄₄₈).

The spelling of 99923653 in words is "ninety-nine million, nine hundred twenty-three thousand, six hundred fifty-three".