84809965 has 8 divisors (see below), whose sum is σ = 102574080. Its totient is φ = 67313232.

The previous prime is 84809953. The next prime is 84809999. The reversal of 84809965 is 56990848.

It is a happy number.

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 84809965 - 2¹⁵ = 84777197 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 66145 + ... + 67414.

It is an arithmetic number, because the mean of its divisors is an integer number (12821760).

Almost surely, 2^84809965 is an apocalyptic number.

It is an amenable number.

84809965 is a deficient number, since it is larger than the sum of its proper divisors (17764115).

84809965 is a wasteful number, since it uses less digits than its factorization.

84809965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133691.

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 84809965 is about 9209.2325956075. The cubic root of 84809965 is about 439.3550554575.

The spelling of 84809965 in words is "eighty-four million, eight hundred nine thousand, nine hundred sixty-five".