84809670841 has 9 divisors (see below), whose sum is σ = 98658519141. Its totient is φ = 72692256252.

The previous prime is 84809670821. The next prime is 84809670851. The reversal of 84809670841 is 14807690848.

It is a happy number.

The square root of 84809670841 is 291221.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 84809670841 - 2⁵ = 84809670809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84809670821) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2017746 + ... + 2059348.

Almost surely, 2^84809670841 is an apocalyptic number.

84809670841 is the 291221-st square number.

84809670841 is the 145611-st centered octagonal number.

It is an amenable number.

84809670841 is a deficient number, since it is larger than the sum of its proper divisors (13848848300).

84809670841 is an frugal number, since it uses more digits than its factorization.

84809670841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83220 (or 41610 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 55.

The spelling of 84809670841 in words is "eighty-four billion, eight hundred nine million, six hundred seventy thousand, eight hundred forty-one".