8722920137 has 4 divisors (see below), whose sum is σ = 8726198400. Its totient is φ = 8719641876.

The previous prime is 8722920103. The next prime is 8722920139. The reversal of 8722920137 is 7310292278.

8722920137 is digitally balanced in base 2, 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 a de Polignac number, because none of the positive numbers 2^k-8722920137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8722920094 and 8722920103.

It is not an unprimeable number, because it can be changed into a prime (8722920139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1635137 + ... + 1640462.

It is an arithmetic number, because the mean of its divisors is an integer number (2181549600).

Almost surely, 2^8722920137 is an apocalyptic number.

It is an amenable number.

8722920137 is a deficient number, since it is larger than the sum of its proper divisors (3278263).

8722920137 is a wasteful number, since it uses less digits than its factorization.

8722920137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3278262.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 8722920137 is about 93396.5745463933. The cubic root of 8722920137 is about 2058.5146656808.

The spelling of 8722920137 in words is "eight billion, seven hundred twenty-two million, nine hundred twenty thousand, one hundred thirty-seven".