84361847 has 2 divisors, whose sum is σ = 84361848. Its totient is φ = 84361846.

The previous prime is 84361817. The next prime is 84361859. The reversal of 84361847 is 74816348.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84361847 - 2¹⁴ = 84345463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84361817) 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 as a sum of consecutive naturals, namely, 42180923 + 42180924.

It is an arithmetic number, because the mean of its divisors is an integer number (42180924).

Almost surely, 2^84361847 is an apocalyptic number.

84361847 is a deficient number, since it is larger than the sum of its proper divisors (1).

84361847 is an equidigital number, since it uses as much as digits as its factorization.

84361847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 41.

The square root of 84361847 is about 9184.8705488972. The cubic root of 84361847 is about 438.5798686703.

The spelling of 84361847 in words is "eighty-four million, three hundred sixty-one thousand, eight hundred forty-seven".