99647409 has 8 divisors (see below), whose sum is σ = 134683552. Its totient is φ = 65521440.

The previous prime is 99647399. The next prime is 99647411. The reversal of 99647409 is 90474699.

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

It is not a de Polignac number, because 99647409 - 2¹³ = 99639217 is a prime.

It is a super-2 number, since 2×99647409² = 19859212240826562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99647209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227287 + ... + 227724.

It is an arithmetic number, because the mean of its divisors is an integer number (16835444).

Almost surely, 2^99647409 is an apocalyptic number.

It is an amenable number.

99647409 is a deficient number, since it is larger than the sum of its proper divisors (35036143).

99647409 is a wasteful number, since it uses less digits than its factorization.

99647409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455087.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 99647409 is about 9982.3548824914. The cubic root of 99647409 is about 463.6127134593.

The spelling of 99647409 in words is "ninety-nine million, six hundred forty-seven thousand, four hundred nine".