8907121049 has 4 divisors (see below), whose sum is σ = 9431069364. Its totient is φ = 8383172736.

The previous prime is 8907121043. The next prime is 8907121057. The reversal of 8907121049 is 9401217098.

8907121049 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.

It can be written as a sum of positive squares in 2 ways, for example, as 7825171600 + 1081949449 = 88460^2 + 32893^2 .

It is not a de Polignac number, because 8907121049 - 2⁸ = 8907120793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8907120997 and 8907121015.

It is not an unprimeable number, because it can be changed into a prime (8907121043) 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, 261974132 + ... + 261974165.

It is an arithmetic number, because the mean of its divisors is an integer number (2357767341).

Almost surely, 2^8907121049 is an apocalyptic number.

It is an amenable number.

8907121049 is a deficient number, since it is larger than the sum of its proper divisors (523948315).

8907121049 is a wasteful number, since it uses less digits than its factorization.

8907121049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523948314.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 8907121049 is about 94377.5452583929. The cubic root of 8907121049 is about 2072.9036590930.

The spelling of 8907121049 in words is "eight billion, nine hundred seven million, one hundred twenty-one thousand, forty-nine".