99999544 has 16 divisors (see below), whose sum is σ = 187742520. Its totient is φ = 49934880.

The previous prime is 99999541. The next prime is 99999547. The reversal of 99999544 is 44599999.

It is an interprime number because it is at equal distance from previous prime (99999541) and next prime (99999547).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99999541) 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, 1219 + ... + 14194.

Almost surely, 2^99999544 is an apocalyptic number.

It is an amenable number.

99999544 is a deficient number, since it is larger than the sum of its proper divisors (87742976).

99999544 is a wasteful number, since it uses less digits than its factorization.

99999544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16230 (or 16226 counting only the distinct ones).

The product of its digits is 4723920, while the sum is 58.

The square root of 99999544 is about 9999.9771999740. The cubic root of 99999544 is about 464.1581778387.

The spelling of 99999544 in words is "ninety-nine million, nine hundred ninety-nine thousand, five hundred forty-four".