99787441 has 4 divisors (see below), whose sum is σ = 107463412. Its totient is φ = 92111472.

The previous prime is 99787421. The next prime is 99787469. The reversal of 99787441 is 14478799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14478799 = 23 ⋅629513.

It can be written as a sum of positive squares in 2 ways, for example, as 4822416 + 94965025 = 2196^2 + 9745^2 .

It is a cyclic number.

It is not a de Polignac number, because 99787441 - 2⁷ = 99787313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99787421) 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, 3837966 + ... + 3837991.

It is an arithmetic number, because the mean of its divisors is an integer number (26865853).

Almost surely, 2^99787441 is an apocalyptic number.

It is an amenable number.

99787441 is a deficient number, since it is larger than the sum of its proper divisors (7675971).

99787441 is a wasteful number, since it uses less digits than its factorization.

99787441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7675970.

The product of its digits is 508032, while the sum is 49.

The square root of 99787441 is about 9989.3663963236. The cubic root of 99787441 is about 463.8297795775.

The spelling of 99787441 in words is "ninety-nine million, seven hundred eighty-seven thousand, four hundred forty-one".