99842641 has 4 divisors (see below), whose sum is σ = 100831284. Its totient is φ = 98854000.

The previous prime is 99842627. The next prime is 99842669. The reversal of 99842641 is 14624899.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49999041 + 49843600 = 7071^2 + 7060^2 .

It is a cyclic number.

It is not a de Polignac number, because 99842641 - 2¹¹ = 99840593 is a prime.

It is a super-3 number, since 3×99842641³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99842671) 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, 494170 + ... + 494371.

It is an arithmetic number, because the mean of its divisors is an integer number (25207821).

Almost surely, 2^99842641 is an apocalyptic number.

It is an amenable number.

99842641 is a deficient number, since it is larger than the sum of its proper divisors (988643).

99842641 is a wasteful number, since it uses less digits than its factorization.

99842641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988642.

The product of its digits is 124416, while the sum is 43.

The square root of 99842641 is about 9992.1289523304. The cubic root of 99842641 is about 463.9152902856.

The spelling of 99842641 in words is "ninety-nine million, eight hundred forty-two thousand, six hundred forty-one".