84004003 has 2 divisors, whose sum is σ = 84004004. Its totient is φ = 84004002.

The previous prime is 84003989. The next prime is 84004007. The reversal of 84004003 is 30040048.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84004003 - 2⁵ = 84003971 is a prime.

It is not a weakly prime, because it can be changed into another prime (84004007) 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, 42002001 + 42002002.

It is an arithmetic number, because the mean of its divisors is an integer number (42002002).

Almost surely, 2^84004003 is an apocalyptic number.

84004003 is a deficient number, since it is larger than the sum of its proper divisors (1).

84004003 is an equidigital number, since it uses as much as digits as its factorization.

84004003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 84004003 is about 9165.3697688637. The cubic root of 84004003 is about 437.9588707097.

It can be divided in two parts, 8400 and 4003, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 84004003 in words is "eighty-four million, four thousand, three".