99948643 has 2 divisors, whose sum is σ = 99948644. Its totient is φ = 99948642.

The previous prime is 99948601. The next prime is 99948647. The reversal of 99948643 is 34684999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99948643 - 2⁹ = 99948131 is a prime.

It is not a weakly prime, because it can be changed into another prime (99948647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49974321 + 49974322.

It is an arithmetic number, because the mean of its divisors is an integer number (49974322).

Almost surely, 2^99948643 is an apocalyptic number.

99948643 is a deficient number, since it is larger than the sum of its proper divisors (1).

99948643 is an equidigital number, since it uses as much as digits as its factorization.

99948643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 52.

The square root of 99948643 is about 9997.4318202226. The cubic root of 99948643 is about 464.0794103955.

Subtracting from 99948643 its sum of digits (52), we obtain a triangular number (99948591 = T₁₄₁₃₈).

The spelling of 99948643 in words is "ninety-nine million, nine hundred forty-eight thousand, six hundred forty-three".