83864547 has 24 divisors (see below), whose sum is σ = 132678000. Its totient is φ = 50730048.

The previous prime is 83864531. The next prime is 83864581. The reversal of 83864547 is 74546838.

It is not a de Polignac number, because 83864547 - 2⁴ = 83864531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83864507) 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 23 ways as a sum of consecutive naturals, for example, 829 + ... + 12977.

It is an arithmetic number, because the mean of its divisors is an integer number (5528250).

Almost surely, 2^83864547 is an apocalyptic number.

83864547 is a deficient number, since it is larger than the sum of its proper divisors (48813453).

83864547 is a wasteful number, since it uses less digits than its factorization.

83864547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12227 (or 12224 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 83864547 is about 9157.7588415507. The cubic root of 83864547 is about 437.7163829752.

The spelling of 83864547 in words is "eighty-three million, eight hundred sixty-four thousand, five hundred forty-seven".