7913689 has 4 divisors (see below), whose sum is σ = 9044224. Its totient is φ = 6783156.

The previous prime is 7913683. The next prime is 7913701. The reversal of 7913689 is 9863197.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9863197 = 563 ⋅17519.

It is a cyclic number.

It is not a de Polignac number, because 7913689 - 2³ = 7913681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7913681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565257 + ... + 565270.

It is an arithmetic number, because the mean of its divisors is an integer number (2261056).

Almost surely, 2^7913689 is an apocalyptic number.

It is an amenable number.

7913689 is a deficient number, since it is larger than the sum of its proper divisors (1130535).

7913689 is a wasteful number, since it uses less digits than its factorization.

7913689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130534.

The product of its digits is 81648, while the sum is 43.

The square root of 7913689 is about 2813.1279743375. The cubic root of 7913689 is about 199.2781393875.

The spelling of 7913689 in words is "seven million, nine hundred thirteen thousand, six hundred eighty-nine".