99956443 has 4 divisors (see below), whose sum is σ = 101650680. Its totient is φ = 98262208.

The previous prime is 99956387. The next prime is 99956471. The reversal of 99956443 is 34465999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34465999 = 83 ⋅415253.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99956443 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99956543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847030 + ... + 847147.

It is an arithmetic number, because the mean of its divisors is an integer number (25412670).

Almost surely, 2^99956443 is an apocalyptic number.

99956443 is a deficient number, since it is larger than the sum of its proper divisors (1694237).

99956443 is a wasteful number, since it uses less digits than its factorization.

99956443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694236.

The product of its digits is 1049760, while the sum is 49.

The square root of 99956443 is about 9997.8219127968. The cubic root of 99956443 is about 464.0914823461.

The spelling of 99956443 in words is "ninety-nine million, nine hundred fifty-six thousand, four hundred forty-three".