84216441 has 4 divisors (see below), whose sum is σ = 112288592. Its totient is φ = 56144292.

The previous prime is 84216427. The next prime is 84216469. The reversal of 84216441 is 14461248.

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 not a de Polignac number, because 84216441 - 2¹³ = 84208249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 84216399 and 84216408.

It is not an unprimeable number, because it can be changed into a prime (84216481) 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, 14036071 + ... + 14036076.

It is an arithmetic number, because the mean of its divisors is an integer number (28072148).

Almost surely, 2^84216441 is an apocalyptic number.

It is an amenable number.

84216441 is a deficient number, since it is larger than the sum of its proper divisors (28072151).

84216441 is a wasteful number, since it uses less digits than its factorization.

84216441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28072150.

The product of its digits is 6144, while the sum is 30.

The square root of 84216441 is about 9176.9516180483. The cubic root of 84216441 is about 438.3277451454.

Adding to 84216441 its reverse (14461248), we get a palindrome (98677689).

The spelling of 84216441 in words is "eighty-four million, two hundred sixteen thousand, four hundred forty-one".