84218903 has 2 divisors, whose sum is σ = 84218904. Its totient is φ = 84218902.

The previous prime is 84218899. The next prime is 84218917. The reversal of 84218903 is 30981248.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84218903 - 2² = 84218899 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84218923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42109451 + 42109452.

It is an arithmetic number, because the mean of its divisors is an integer number (42109452).

Almost surely, 2^84218903 is an apocalyptic number.

84218903 is a deficient number, since it is larger than the sum of its proper divisors (1).

84218903 is an equidigital number, since it uses as much as digits as its factorization.

84218903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 84218903 is about 9177.0857574722. The cubic root of 84218903 is about 438.3320164903.

The spelling of 84218903 in words is "eighty-four million, two hundred eighteen thousand, nine hundred three".