84420259 has 16 divisors (see below), whose sum is σ = 105454080. Its totient is φ = 65655360.

The previous prime is 84420253. The next prime is 84420307. The reversal of 84420259 is 95202448.

It is a cyclic number.

It is not a de Polignac number, because 84420259 - 2³ = 84420251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84420251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70167 + ... + 71359.

It is an arithmetic number, because the mean of its divisors is an integer number (6590880).

Almost surely, 2^84420259 is an apocalyptic number.

84420259 is a deficient number, since it is larger than the sum of its proper divisors (21033821).

84420259 is a wasteful number, since it uses less digits than its factorization.

84420259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 84420259 is about 9188.0497930736. The cubic root of 84420259 is about 438.6810693030.

The spelling of 84420259 in words is "eighty-four million, four hundred twenty thousand, two hundred fifty-nine".