84870259 has 2 divisors, whose sum is σ = 84870260. Its totient is φ = 84870258.

The previous prime is 84870257. The next prime is 84870271. The reversal of 84870259 is 95207848.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84870259 - 2¹ = 84870257 is a prime.

Together with 84870257, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (84870257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42435129 + 42435130.

It is an arithmetic number, because the mean of its divisors is an integer number (42435130).

Almost surely, 2^84870259 is an apocalyptic number.

84870259 is a deficient number, since it is larger than the sum of its proper divisors (1).

84870259 is an equidigital number, since it uses as much as digits as its factorization.

84870259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 84870259 is about 9212.5055766605. The cubic root of 84870259 is about 439.4591477795.

The spelling of 84870259 in words is "eighty-four million, eight hundred seventy thousand, two hundred fifty-nine".