99447284 has 6 divisors (see below), whose sum is σ = 174032754. Its totient is φ = 49723640.

The previous prime is 99447281. The next prime is 99447301. The reversal of 99447284 is 48274499.

It can be written as a sum of positive squares in only one way, i.e., 92582884 + 6864400 = 9622^2 + 2620^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99447281) 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 as a sum of consecutive naturals, namely, 12430907 + ... + 12430914.

It is an arithmetic number, because the mean of its divisors is an integer number (29005459).

Almost surely, 2^99447284 is an apocalyptic number.

It is an amenable number.

99447284 is a deficient number, since it is larger than the sum of its proper divisors (74585470).

99447284 is a wasteful number, since it uses less digits than its factorization.

99447284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24861825 (or 24861823 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The square root of 99447284 is about 9972.3259072295. The cubic root of 99447284 is about 463.3021428319.

The spelling of 99447284 in words is "ninety-nine million, four hundred forty-seven thousand, two hundred eighty-four".