84227509 has 8 divisors (see below), whose sum is σ = 86572160. Its totient is φ = 81914976.

The previous prime is 84227501. The next prime is 84227531. The reversal of 84227509 is 90572248.

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 84227509 - 2³ = 84227501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84227501) 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 7 ways as a sum of consecutive naturals, for example, 2664 + ... + 13249.

It is an arithmetic number, because the mean of its divisors is an integer number (10821520).

Almost surely, 2^84227509 is an apocalyptic number.

It is an amenable number.

84227509 is a deficient number, since it is larger than the sum of its proper divisors (2344651).

84227509 is a wasteful number, since it uses less digits than its factorization.

84227509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16059.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 84227509 is about 9177.5546307282. The cubic root of 84227509 is about 438.3469464593.

It can be divided in two parts, 8422 and 7509, that added together give a triangular number (15931 = T₁₇₈).

The spelling of 84227509 in words is "eighty-four million, two hundred twenty-seven thousand, five hundred nine".