99941543 has 4 divisors (see below), whose sum is σ = 107629368. Its totient is φ = 92253720.

The previous prime is 99941533. The next prime is 99941561. The reversal of 99941543 is 34514999.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-99941543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99941494 and 99941503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99941533) 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, 3843893 + ... + 3843918.

It is an arithmetic number, because the mean of its divisors is an integer number (26907342).

Almost surely, 2^99941543 is an apocalyptic number.

99941543 is a deficient number, since it is larger than the sum of its proper divisors (7687825).

99941543 is a wasteful number, since it uses less digits than its factorization.

99941543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7687824.

The product of its digits is 174960, while the sum is 44.

The square root of 99941543 is about 9997.0767227225. The cubic root of 99941543 is about 464.0684212790.

The spelling of 99941543 in words is "ninety-nine million, nine hundred forty-one thousand, five hundred forty-three".