99243381 has 4 divisors (see below), whose sum is σ = 132324512. Its totient is φ = 66162252.

The previous prime is 99243379. The next prime is 99243383. The reversal of 99243381 is 18334299.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (99243379) and next prime (99243383).

It is not a de Polignac number, because 99243381 - 2¹ = 99243379 is a prime.

It is a super-2 number, since 2×99243381² = 19698497344622322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99243383) 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, 16540561 + ... + 16540566.

It is an arithmetic number, because the mean of its divisors is an integer number (33081128).

Almost surely, 2^99243381 is an apocalyptic number.

It is an amenable number.

99243381 is a deficient number, since it is larger than the sum of its proper divisors (33081131).

99243381 is a wasteful number, since it uses less digits than its factorization.

99243381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33081130.

The product of its digits is 46656, while the sum is 39.

The square root of 99243381 is about 9962.0972189595. The cubic root of 99243381 is about 462.9852803640.

The spelling of 99243381 in words is "ninety-nine million, two hundred forty-three thousand, three hundred eighty-one".