99447671 has 4 divisors (see below), whose sum is σ = 105297552. Its totient is φ = 93597792.

The previous prime is 99447643. The next prime is 99447683. The reversal of 99447671 is 17674499.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99447671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99447611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2924915 + ... + 2924948.

It is an arithmetic number, because the mean of its divisors is an integer number (26324388).

Almost surely, 2^99447671 is an apocalyptic number.

99447671 is a deficient number, since it is larger than the sum of its proper divisors (5849881).

99447671 is a wasteful number, since it uses less digits than its factorization.

99447671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5849880.

The product of its digits is 381024, while the sum is 47.

The square root of 99447671 is about 9972.3453109086. The cubic root of 99447671 is about 463.3027438126.

The spelling of 99447671 in words is "ninety-nine million, four hundred forty-seven thousand, six hundred seventy-one".