84496409 has 8 divisors (see below), whose sum is σ = 90390888. Its totient is φ = 78704640.

The previous prime is 84496387. The next prime is 84496453. The reversal of 84496409 is 90469448.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17305600 + 67190809 = 4160^2 + 8197^2 .

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 84496409 - 2¹² = 84492313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84496409.

It is not an unprimeable number, because it can be changed into a prime (84496609) 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, 23972 + ... + 27269.

It is an arithmetic number, because the mean of its divisors is an integer number (11298861).

Almost surely, 2^84496409 is an apocalyptic number.

It is an amenable number.

84496409 is a deficient number, since it is larger than the sum of its proper divisors (5894479).

84496409 is a wasteful number, since it uses less digits than its factorization.

84496409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51355.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 84496409 is about 9192.1928286998. The cubic root of 84496409 is about 438.8129315066.

The spelling of 84496409 in words is "eighty-four million, four hundred ninety-six thousand, four hundred nine".