84513445 has 4 divisors (see below), whose sum is σ = 101416140. Its totient is φ = 67610752.

The previous prime is 84513437. The next prime is 84513479. The reversal of 84513445 is 54431548.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15007876 + 69505569 = 3874^2 + 8337^2 .

It is a cyclic number.

It is not a de Polignac number, because 84513445 - 2³ = 84513437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84513445.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8451340 + ... + 8451349.

It is an arithmetic number, because the mean of its divisors is an integer number (25354035).

Almost surely, 2^84513445 is an apocalyptic number.

It is an amenable number.

84513445 is a deficient number, since it is larger than the sum of its proper divisors (16902695).

84513445 is a wasteful number, since it uses less digits than its factorization.

84513445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16902694.

The product of its digits is 38400, while the sum is 34.

The square root of 84513445 is about 9193.1194379275. The cubic root of 84513445 is about 438.8424203919.

The spelling of 84513445 in words is "eighty-four million, five hundred thirteen thousand, four hundred forty-five".