99557443 has 4 divisors (see below), whose sum is σ = 99653400. Its totient is φ = 99461488.

The previous prime is 99557411. The next prime is 99557449. The reversal of 99557443 is 34475599.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34475599 = 53 ⋅650483.

It is a cyclic number.

It is not a de Polignac number, because 99557443 - 2⁵ = 99557411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99557393 and 99557402.

It is not an unprimeable number, because it can be changed into a prime (99557449) 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 in 3 ways as a sum of consecutive naturals, for example, 46405 + ... + 48502.

It is an arithmetic number, because the mean of its divisors is an integer number (24913350).

Almost surely, 2^99557443 is an apocalyptic number.

99557443 is a deficient number, since it is larger than the sum of its proper divisors (95957).

99557443 is a wasteful number, since it uses less digits than its factorization.

99557443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95956.

The product of its digits is 680400, while the sum is 46.

The square root of 99557443 is about 9977.8476135888. The cubic root of 99557443 is about 463.4731482315.

It can be divided in two parts, 99557 and 443, that added together give a 5-th power (100000 = 10⁵).

The spelling of 99557443 in words is "ninety-nine million, five hundred fifty-seven thousand, four hundred forty-three".