84820347 has 12 divisors (see below), whose sum is σ = 124595640. Its totient is φ = 55588128.

The previous prime is 84820339. The next prime is 84820423. The reversal of 84820347 is 74302848.

It is not a de Polignac number, because 84820347 - 2³ = 84820339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84820847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79338 + ... + 80399.

It is an arithmetic number, because the mean of its divisors is an integer number (10382970).

Almost surely, 2^84820347 is an apocalyptic number.

84820347 is a deficient number, since it is larger than the sum of its proper divisors (39775293).

84820347 is a wasteful number, since it uses less digits than its factorization.

84820347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159802 (or 159799 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 84820347 is about 9209.7962518180. The cubic root of 84820347 is about 439.3729825885.

The spelling of 84820347 in words is "eighty-four million, eight hundred twenty thousand, three hundred forty-seven".