84003643 has 2 divisors, whose sum is σ = 84003644. Its totient is φ = 84003642.

The previous prime is 84003641. The next prime is 84003697. The reversal of 84003643 is 34630048.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84003643 - 2¹ = 84003641 is a prime.

It is a super-2 number, since 2×84003643² = 14113224074542898, which contains 22 as substring.

Together with 84003641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (84003641) 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, 42001821 + 42001822.

It is an arithmetic number, because the mean of its divisors is an integer number (42001822).

Almost surely, 2^84003643 is an apocalyptic number.

84003643 is a deficient number, since it is larger than the sum of its proper divisors (1).

84003643 is an equidigital number, since it uses as much as digits as its factorization.

84003643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 84003643 is about 9165.3501297004. The cubic root of 84003643 is about 437.9582450831.

The spelling of 84003643 in words is "eighty-four million, three thousand, six hundred forty-three".