99543955 has 16 divisors (see below), whose sum is σ = 136684224. Its totient is φ = 68175360.

The previous prime is 99543953. The next prime is 99543967. The reversal of 99543955 is 55934599.

It is not a de Polignac number, because 99543955 - 2¹ = 99543953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99543899 and 99543908.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45159 + ... + 47311.

It is an arithmetic number, because the mean of its divisors is an integer number (8542764).

Almost surely, 2^99543955 is an apocalyptic number.

99543955 is a deficient number, since it is larger than the sum of its proper divisors (37140269).

99543955 is a wasteful number, since it uses less digits than its factorization.

99543955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486.

The product of its digits is 1093500, while the sum is 49.

The square root of 99543955 is about 9977.1716934209. The cubic root of 99543955 is about 463.4522169046.

The spelling of 99543955 in words is "ninety-nine million, five hundred forty-three thousand, nine hundred fifty-five".