99124771 has 4 divisors (see below), whose sum is σ = 99561672. Its totient is φ = 98687872.

The previous prime is 99124769. The next prime is 99124777. The reversal of 99124771 is 17742199.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17742199 = 31 ⋅572329.

It is a cyclic number.

It is not a de Polignac number, because 99124771 - 2¹ = 99124769 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99124777) 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, 218110 + ... + 218563.

It is an arithmetic number, because the mean of its divisors is an integer number (24890418).

Almost surely, 2^99124771 is an apocalyptic number.

99124771 is a deficient number, since it is larger than the sum of its proper divisors (436901).

99124771 is a wasteful number, since it uses less digits than its factorization.

99124771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436900.

The product of its digits is 31752, while the sum is 40.

The square root of 99124771 is about 9956.1423754384. The cubic root of 99124771 is about 462.8007623470.

The spelling of 99124771 in words is "ninety-nine million, one hundred twenty-four thousand, seven hundred seventy-one".