84054947 has 2 divisors, whose sum is σ = 84054948. Its totient is φ = 84054946.

The previous prime is 84054931. The next prime is 84054959. The reversal of 84054947 is 74945048.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84054947 - 2⁴ = 84054931 is a prime.

It is not a weakly prime, because it can be changed into another prime (84054967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42027473 + 42027474.

It is an arithmetic number, because the mean of its divisors is an integer number (42027474).

Almost surely, 2^84054947 is an apocalyptic number.

84054947 is a deficient number, since it is larger than the sum of its proper divisors (1).

84054947 is an equidigital number, since it uses as much as digits as its factorization.

84054947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 84054947 is about 9168.1485044692. The cubic root of 84054947 is about 438.0473858090.

The spelling of 84054947 in words is "eighty-four million, fifty-four thousand, nine hundred forty-seven".