8372719121 has 8 divisors (see below), whose sum is σ = 9076490304. Its totient is φ = 7677478800.

The previous prime is 8372719111. The next prime is 8372719139. The reversal of 8372719121 is 1219172738.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8372719121 - 2⁶ = 8372719057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8372719111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2130671 + ... + 2134596.

It is an arithmetic number, because the mean of its divisors is an integer number (1134561288).

Almost surely, 2^8372719121 is an apocalyptic number.

It is an amenable number.

8372719121 is a deficient number, since it is larger than the sum of its proper divisors (703771183).

8372719121 is a wasteful number, since it uses less digits than its factorization.

8372719121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4265431.

The product of its digits is 42336, while the sum is 41.

The square root of 8372719121 is about 91502.5634668232. The cubic root of 8372719121 is about 2030.5896772699.

The spelling of 8372719121 in words is "eight billion, three hundred seventy-two million, seven hundred nineteen thousand, one hundred twenty-one".