84505319 has 4 divisors (see below), whose sum is σ = 84826896. Its totient is φ = 84183744.

The previous prime is 84505307. The next prime is 84505321. The reversal of 84505319 is 91350548.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84505319 - 2¹⁶ = 84439783 is a prime.

It is a super-2 number, since 2×84505319² = 14282297878583522, 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 (84505919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160394 + ... + 160919.

It is an arithmetic number, because the mean of its divisors is an integer number (21206724).

Almost surely, 2^84505319 is an apocalyptic number.

84505319 is a deficient number, since it is larger than the sum of its proper divisors (321577).

84505319 is a wasteful number, since it uses less digits than its factorization.

84505319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321576.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 84505319 is about 9192.6774663316. The cubic root of 84505319 is about 438.8283549857.

The spelling of 84505319 in words is "eighty-four million, five hundred five thousand, three hundred nineteen".