84259091 has 16 divisors (see below), whose sum is σ = 101836800. Its totient is φ = 68102208.

The previous prime is 84259079. The next prime is 84259103. The reversal of 84259091 is 19095248.

It is an interprime number because it is at equal distance from previous prime (84259079) and next prime (84259103).

It is a cyclic number.

It is not a de Polignac number, because 84259091 - 2²⁶ = 17150227 is a prime.

It is a super-2 number, since 2×84259091² = 14199188832292562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84259031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29630 + ... + 32348.

It is an arithmetic number, because the mean of its divisors is an integer number (6364800).

Almost surely, 2^84259091 is an apocalyptic number.

84259091 is a deficient number, since it is larger than the sum of its proper divisors (17577709).

84259091 is a wasteful number, since it uses less digits than its factorization.

84259091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2978.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 84259091 is about 9179.2750803100. The cubic root of 84259091 is about 438.4017272290.

The spelling of 84259091 in words is "eighty-four million, two hundred fifty-nine thousand, ninety-one".