99636447 has 8 divisors (see below), whose sum is σ = 133200640. Its totient is φ = 66248280.

The previous prime is 99636421. The next prime is 99636469. The reversal of 99636447 is 74463699.

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

It is not a de Polignac number, because 99636447 - 2⁷ = 99636319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99636396 and 99636405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99636347) 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, 42679 + ... + 44952.

It is an arithmetic number, because the mean of its divisors is an integer number (16650080).

Almost surely, 2^99636447 is an apocalyptic number.

99636447 is a deficient number, since it is larger than the sum of its proper divisors (33564193).

99636447 is a wasteful number, since it uses less digits than its factorization.

99636447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88013.

The product of its digits is 979776, while the sum is 48.

The square root of 99636447 is about 9981.8057985517. The cubic root of 99636447 is about 463.5957124856.

The spelling of 99636447 in words is "ninety-nine million, six hundred thirty-six thousand, four hundred forty-seven".