7639121 has 12 divisors (see below), whose sum is σ = 9217152. Its totient is φ = 6201144.

The previous prime is 7639117. The next prime is 7639123. The reversal of 7639121 is 1219367.

7639121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7639121 - 2² = 7639117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7639123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1016 + ... + 4038.

It is an arithmetic number, because the mean of its divisors is an integer number (768096).

Almost surely, 2^7639121 is an apocalyptic number.

It is an amenable number.

7639121 is a deficient number, since it is larger than the sum of its proper divisors (1578031).

7639121 is a wasteful number, since it uses less digits than its factorization.

7639121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068 (or 3049 counting only the distinct ones).

The product of its digits is 2268, while the sum is 29.

The square root of 7639121 is about 2763.8959821238. The cubic root of 7639121 is about 196.9462864717.

The spelling of 7639121 in words is "seven million, six hundred thirty-nine thousand, one hundred twenty-one".