8400212173 has 4 divisors (see below), whose sum is σ = 8400710560. Its totient is φ = 8399713788.

The previous prime is 8400212111. The next prime is 8400212201. The reversal of 8400212173 is 3712120048.

8400212173 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8400212173 - 2²¹ = 8398115021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8400210173) 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, 222993 + ... + 257926.

It is an arithmetic number, because the mean of its divisors is an integer number (2100177640).

Almost surely, 2^8400212173 is an apocalyptic number.

It is an amenable number.

8400212173 is a deficient number, since it is larger than the sum of its proper divisors (498387).

8400212173 is a wasteful number, since it uses less digits than its factorization.

8400212173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498386.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 8400212173 is about 91652.6713904183. The cubic root of 8400212173 is about 2032.8098287129.

The spelling of 8400212173 in words is "eight billion, four hundred million, two hundred twelve thousand, one hundred seventy-three".