84447297 has 24 divisors (see below), whose sum is σ = 135907200. Its totient is φ = 50088480.

The previous prime is 84447281. The next prime is 84447301. The reversal of 84447297 is 79274448.

It is not a de Polignac number, because 84447297 - 2⁴ = 84447281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84447247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4422 + ... + 13727.

It is an arithmetic number, because the mean of its divisors is an integer number (5662800).

Almost surely, 2^84447297 is an apocalyptic number.

It is an amenable number.

84447297 is a deficient number, since it is larger than the sum of its proper divisors (51459903).

84447297 is a wasteful number, since it uses less digits than its factorization.

84447297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18213 (or 18210 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 84447297 is about 9189.5210430142. The cubic root of 84447297 is about 438.7278976861.

The spelling of 84447297 in words is "eighty-four million, four hundred forty-seven thousand, two hundred ninety-seven".