84159261 has 12 divisors (see below), whose sum is σ = 123029088. Its totient is φ = 55429704.

The previous prime is 84159239. The next prime is 84159301. The reversal of 84159261 is 16295148.

84159261 is a `hidden beast` number, since 8 + 4 + 1 + 592 + 61 = 666.

It is not a de Polignac number, because 84159261 - 2¹⁸ = 83897117 is a prime.

It is a super-2 number, since 2×84159261² = 14165562424132242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84159221) 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 11 ways as a sum of consecutive naturals, for example, 55585 + ... + 57078.

It is an arithmetic number, because the mean of its divisors is an integer number (10252424).

Almost surely, 2^84159261 is an apocalyptic number.

It is an amenable number.

84159261 is a deficient number, since it is larger than the sum of its proper divisors (38869827).

84159261 is a wasteful number, since it uses less digits than its factorization.

84159261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112752 (or 112749 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 84159261 is about 9173.8356754413. The cubic root of 84159261 is about 438.2285196468.

The spelling of 84159261 in words is "eighty-four million, one hundred fifty-nine thousand, two hundred sixty-one".