7689939 has 16 divisors (see below), whose sum is σ = 10552320. Its totient is φ = 4979520.

The previous prime is 7689937. The next prime is 7689943. The reversal of 7689939 is 9399867.

It is not a de Polignac number, because 7689939 - 2¹ = 7689937 is a prime.

7689939 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7689891 and 7689900.

It is not an unprimeable number, because it can be changed into a prime (7689931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16599 + ... + 17055.

It is an arithmetic number, because the mean of its divisors is an integer number (659520).

Almost surely, 2^7689939 is an apocalyptic number.

7689939 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

7689939 is a deficient number, since it is larger than the sum of its proper divisors (2862381).

7689939 is a wasteful number, since it uses less digits than its factorization.

7689939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610.

The product of its digits is 734832, while the sum is 51.

The square root of 7689939 is about 2773.0739261693. The cubic root of 7689939 is about 197.3820392643.

The spelling of 7689939 in words is "seven million, six hundred eighty-nine thousand, nine hundred thirty-nine".