99844501 has 4 divisors (see below), whose sum is σ = 99881100. Its totient is φ = 99807904.

The previous prime is 99844499. The next prime is 99844523. The reversal of 99844501 is 10544899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10544899 = 2437 ⋅4327.

It can be written as a sum of positive squares in 2 ways, for example, as 6625476 + 93219025 = 2574^2 + 9655^2 .

It is a cyclic number.

It is not a de Polignac number, because 99844501 - 2¹ = 99844499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99844571) 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, 13846 + ... + 19783.

It is an arithmetic number, because the mean of its divisors is an integer number (24970275).

Almost surely, 2^99844501 is an apocalyptic number.

It is an amenable number.

99844501 is a deficient number, since it is larger than the sum of its proper divisors (36599).

99844501 is a wasteful number, since it uses less digits than its factorization.

99844501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36598.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 99844501 is about 9992.2220251554. Note that the first 3 decimals coincide. The cubic root of 99844501 is about 463.9181710757.

The spelling of 99844501 in words is "ninety-nine million, eight hundred forty-four thousand, five hundred one".