84050009 has 8 divisors (see below), whose sum is σ = 86218440. Its totient is φ = 81907200.

The previous prime is 84050003. The next prime is 84050011. The reversal of 84050009 is 90005048.

It can be written as a sum of positive squares in 4 ways, for example, as 3139984 + 80910025 = 1772^2 + 8995^2 .

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 84050009 - 2⁸ = 84049753 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 84050009.

It is not an unprimeable number, because it can be changed into a prime (84050003) 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, 329 + ... + 12969.

It is an arithmetic number, because the mean of its divisors is an integer number (10777305).

Almost surely, 2^84050009 is an apocalyptic number.

It is an amenable number.

84050009 is a deficient number, since it is larger than the sum of its proper divisors (2168431).

84050009 is a wasteful number, since it uses less digits than its factorization.

84050009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12811.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 84050009 is about 9167.8791985933. The cubic root of 84050009 is about 438.0388076093.

The spelling of 84050009 in words is "eighty-four million, fifty thousand, nine".