84284381 has 4 divisors (see below), whose sum is σ = 87003264. Its totient is φ = 81565500.

The previous prime is 84284341. The next prime is 84284393. The reversal of 84284381 is 18348248.

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 84284381 - 2¹⁰ = 84283357 is a prime.

It is a super-2 number, since 2×84284381² = 14207713761106322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84284311) 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, 1359395 + ... + 1359456.

It is an arithmetic number, because the mean of its divisors is an integer number (21750816).

Almost surely, 2^84284381 is an apocalyptic number.

It is an amenable number.

84284381 is a deficient number, since it is larger than the sum of its proper divisors (2718883).

84284381 is a wasteful number, since it uses less digits than its factorization.

84284381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718882.

The product of its digits is 49152, while the sum is 38.

The square root of 84284381 is about 9180.6525367209. The cubic root of 84284381 is about 438.4455842993.

The spelling of 84284381 in words is "eighty-four million, two hundred eighty-four thousand, three hundred eighty-one".