8721119 has 16 divisors (see below), whose sum is σ = 10173600. Its totient is φ = 7388160.

The previous prime is 8721101. The next prime is 8721121. The reversal of 8721119 is 9111278.

8721119 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 8721119 - 2²⁰ = 7672543 is a prime.

It is a super-2 number, since 2×8721119² = 152115833224322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8721091 and 8721100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8720119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27707 + ... + 28019.

It is an arithmetic number, because the mean of its divisors is an integer number (635850).

Almost surely, 2^8721119 is an apocalyptic number.

8721119 is a deficient number, since it is larger than the sum of its proper divisors (1452481).

8721119 is a wasteful number, since it uses less digits than its factorization.

8721119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490.

The product of its digits is 1008, while the sum is 29.

The square root of 8721119 is about 2953.1540765764. The cubic root of 8721119 is about 205.8372972987.

It can be divided in two parts, 872 and 1119, that added together give a palindrome (1991).

The spelling of 8721119 in words is "eight million, seven hundred twenty-one thousand, one hundred nineteen".