99381841 has 8 divisors (see below), whose sum is σ = 107339904. Its totient is φ = 91468560.

The previous prime is 99381823. The next prime is 99381853. The reversal of 99381841 is 14818399.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99381841 - 2⁵ = 99381809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99381241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6505 + ... + 15526.

It is an arithmetic number, because the mean of its divisors is an integer number (13417488).

Almost surely, 2^99381841 is an apocalyptic number.

It is an amenable number.

99381841 is a deficient number, since it is larger than the sum of its proper divisors (7958063).

99381841 is a wasteful number, since it uses less digits than its factorization.

99381841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22391.

The product of its digits is 62208, while the sum is 43.

The square root of 99381841 is about 9969.0441367264. The cubic root of 99381841 is about 463.2004925431.

The spelling of 99381841 in words is "ninety-nine million, three hundred eighty-one thousand, eight hundred forty-one".