99667447 has 8 divisors (see below), whose sum is σ = 115124112. Its totient is φ = 85276800.

The previous prime is 99667439. The next prime is 99667471. The reversal of 99667447 is 74476699.

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 99667447 - 2³ = 99667439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99667394 and 99667403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99667417) 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, 266304 + ... + 266677.

It is an arithmetic number, because the mean of its divisors is an integer number (14390514).

Almost surely, 2^99667447 is an apocalyptic number.

99667447 is a deficient number, since it is larger than the sum of its proper divisors (15456665).

99667447 is a wasteful number, since it uses less digits than its factorization.

99667447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533009.

The product of its digits is 2286144, while the sum is 52.

The square root of 99667447 is about 9983.3585030289. The cubic root of 99667447 is about 463.6437871856.

The spelling of 99667447 in words is "ninety-nine million, six hundred sixty-seven thousand, four hundred forty-seven".