84275509 has 8 divisors (see below), whose sum is σ = 85821120. Its totient is φ = 82740000.

The previous prime is 84275501. The next prime is 84275551. The reversal of 84275509 is 90557248.

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 84275509 - 2³ = 84275501 is a prime.

It is a super-2 number, since 2×84275509² = 14204722834418162, 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 (84275501) 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, 15457 + ... + 20185.

It is an arithmetic number, because the mean of its divisors is an integer number (10727640).

Almost surely, 2^84275509 is an apocalyptic number.

It is an amenable number.

84275509 is a deficient number, since it is larger than the sum of its proper divisors (1545611).

84275509 is a wasteful number, since it uses less digits than its factorization.

84275509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5051.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 84275509 is about 9180.1693339502. The cubic root of 84275509 is about 438.4301997734.

The spelling of 84275509 in words is "eighty-four million, two hundred seventy-five thousand, five hundred nine".