99543956 has 12 divisors (see below), whose sum is σ = 174470100. Its totient is φ = 49695360.

The previous prime is 99543953. The next prime is 99543967. The reversal of 99543956 is 65934599.

It can be written as a sum of positive squares in 2 ways, for example, as 88548100 + 10995856 = 9410^2 + 3316^2 .

It is a super-2 number, since 2×99543956² = 19817998352259872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99543953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16181 + ... + 21468.

It is an arithmetic number, because the mean of its divisors is an integer number (14539175).

Almost surely, 2^99543956 is an apocalyptic number.

It is an amenable number.

99543956 is a deficient number, since it is larger than the sum of its proper divisors (74926144).

99543956 is a wasteful number, since it uses less digits than its factorization.

99543956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38314 (or 38312 counting only the distinct ones).

The product of its digits is 1312200, while the sum is 50.

The square root of 99543956 is about 9977.1717435353. The cubic root of 99543956 is about 463.4522184565.

The spelling of 99543956 in words is "ninety-nine million, five hundred forty-three thousand, nine hundred fifty-six".