84146247 has 12 divisors (see below), whose sum is σ = 121725240. Its totient is φ = 56014128.

The previous prime is 84146219. The next prime is 84146299. The reversal of 84146247 is 74264148.

It is not a de Polignac number, because 84146247 - 2⁷ = 84146119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84146747) 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, 213 + ... + 12974.

It is an arithmetic number, because the mean of its divisors is an integer number (10143770).

Almost surely, 2^84146247 is an apocalyptic number.

84146247 is a deficient number, since it is larger than the sum of its proper divisors (37578993).

84146247 is a wasteful number, since it uses less digits than its factorization.

84146247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13902 (or 13899 counting only the distinct ones).

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

The square root of 84146247 is about 9173.1263481978. The cubic root of 84146247 is about 438.2059299366.

The spelling of 84146247 in words is "eighty-four million, one hundred forty-six thousand, two hundred forty-seven".