84159953 has 4 divisors (see below), whose sum is σ = 84181860. Its totient is φ = 84138048.

The previous prime is 84159923. The next prime is 84159983. The reversal of 84159953 is 35995148.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (84159923) and next prime (84159983).

It can be written as a sum of positive squares in 2 ways, for example, as 22819729 + 61340224 = 4777^2 + 7832^2 .

It is a cyclic number.

It is not a de Polignac number, because 84159953 - 2⁸ = 84159697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84159923) 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 3 ways as a sum of consecutive naturals, for example, 3500 + ... + 13437.

It is an arithmetic number, because the mean of its divisors is an integer number (21045465).

Almost surely, 2^84159953 is an apocalyptic number.

It is an amenable number.

84159953 is a deficient number, since it is larger than the sum of its proper divisors (21907).

84159953 is a wasteful number, since it uses less digits than its factorization.

84159953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21906.

The product of its digits is 194400, while the sum is 44.

The square root of 84159953 is about 9173.8733913217. The cubic root of 84159953 is about 438.2297207557.

The spelling of 84159953 in words is "eighty-four million, one hundred fifty-nine thousand, nine hundred fifty-three".