8629913121 has 4 divisors (see below), whose sum is σ = 11506550832. Its totient is φ = 5753275412.

The previous prime is 8629913113. The next prime is 8629913129. The reversal of 8629913121 is 1213199268.

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 an interprime number because it is at equal distance from previous prime (8629913113) and next prime (8629913129).

It is a cyclic number.

It is not a de Polignac number, because 8629913121 - 2³ = 8629913113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8629913129) 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, 1438318851 + ... + 1438318856.

It is an arithmetic number, because the mean of its divisors is an integer number (2876637708).

Almost surely, 2^8629913121 is an apocalyptic number.

It is an amenable number.

8629913121 is a deficient number, since it is larger than the sum of its proper divisors (2876637711).

8629913121 is a wasteful number, since it uses less digits than its factorization.

8629913121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876637710.

The product of its digits is 46656, while the sum is 42.

The square root of 8629913121 is about 92897.3256934773. The cubic root of 8629913121 is about 2051.1722917027.

The spelling of 8629913121 in words is "eight billion, six hundred twenty-nine million, nine hundred thirteen thousand, one hundred twenty-one".