84097509 has 8 divisors (see below), whose sum is σ = 113481312. Its totient is φ = 55389360.

The previous prime is 84097471. The next prime is 84097511. The reversal of 84097509 is 90579048.

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

It is not a de Polignac number, because 84097509 - 2⁷ = 84097381 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84097009) 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, 168622 + ... + 169119.

It is an arithmetic number, because the mean of its divisors is an integer number (14185164).

Almost surely, 2^84097509 is an apocalyptic number.

It is an amenable number.

84097509 is a deficient number, since it is larger than the sum of its proper divisors (29383803).

84097509 is a wasteful number, since it uses less digits than its factorization.

84097509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337827.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 84097509 is about 9170.4693991093. The cubic root of 84097509 is about 438.1213097817.

The spelling of 84097509 in words is "eighty-four million, ninety-seven thousand, five hundred nine".