84215047 has 8 divisors (see below), whose sum is σ = 97682816. Its totient is φ = 71106552.

The previous prime is 84214993. The next prime is 84215069. The reversal of 84215047 is 74051248.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84215047 - 2¹⁹ = 83690759 is a prime.

It is a super-3 number, since 3×84215047³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84215347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89313 + ... + 90250.

It is an arithmetic number, because the mean of its divisors is an integer number (12210352).

Almost surely, 2^84215047 is an apocalyptic number.

84215047 is a deficient number, since it is larger than the sum of its proper divisors (13467769).

84215047 is a wasteful number, since it uses less digits than its factorization.

84215047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179637.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 84215047 is about 9176.8756665872. The cubic root of 84215047 is about 438.3253266459.

The spelling of 84215047 in words is "eighty-four million, two hundred fifteen thousand, forty-seven".