84509203 has 2 divisors, whose sum is σ = 84509204. Its totient is φ = 84509202.

The previous prime is 84509171. The next prime is 84509263. The reversal of 84509203 is 30290548.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84509203 - 2⁵ = 84509171 is a prime.

It is not a weakly prime, because it can be changed into another prime (84509263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42254601 + 42254602.

It is an arithmetic number, because the mean of its divisors is an integer number (42254602).

Almost surely, 2^84509203 is an apocalyptic number.

84509203 is a deficient number, since it is larger than the sum of its proper divisors (1).

84509203 is an equidigital number, since it uses as much as digits as its factorization.

84509203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 84509203 is about 9192.8887190045. Note that the first 3 decimals coincide. The cubic root of 84509203 is about 438.8350779677.

The spelling of 84509203 in words is "eighty-four million, five hundred nine thousand, two hundred three".