84364121 has 4 divisors (see below), whose sum is σ = 84399744. Its totient is φ = 84328500.

The previous prime is 84364109. The next prime is 84364139. The reversal of 84364121 is 12146348.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84364121 - 2²⁶ = 17255257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84364141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13985 + ... + 19086.

It is an arithmetic number, because the mean of its divisors is an integer number (21099936).

Almost surely, 2^84364121 is an apocalyptic number.

It is an amenable number.

84364121 is a deficient number, since it is larger than the sum of its proper divisors (35623).

84364121 is a wasteful number, since it uses less digits than its factorization.

84364121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35622.

The product of its digits is 4608, while the sum is 29.

The square root of 84364121 is about 9184.9943385938. The cubic root of 84364121 is about 438.5838093208.

It can be divided in two parts, 843 and 64121, that multiplied together give a triangular number (54054003 = T₁₀₃₉₇).

The spelling of 84364121 in words is "eighty-four million, three hundred sixty-four thousand, one hundred twenty-one".