84043445 has 8 divisors (see below), whose sum is σ = 100910040. Its totient is φ = 67196160.

The previous prime is 84043423. The next prime is 84043489. The reversal of 84043445 is 54434048.

It can be written as a sum of positive squares in 4 ways, for example, as 28793956 + 55249489 = 5366^2 + 7433^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84043445 - 2¹⁰ = 84042421 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7721 + ... + 15089.

It is an arithmetic number, because the mean of its divisors is an integer number (12613755).

Almost surely, 2^84043445 is an apocalyptic number.

It is an amenable number.

84043445 is a deficient number, since it is larger than the sum of its proper divisors (16866595).

84043445 is a wasteful number, since it uses less digits than its factorization.

84043445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9655.

The product of its (nonzero) digits is 30720, while the sum is 32.

The square root of 84043445 is about 9167.5212025934. The cubic root of 84043445 is about 438.0274042333.

The spelling of 84043445 in words is "eighty-four million, forty-three thousand, four hundred forty-five".