7689993 has 4 divisors (see below), whose sum is σ = 10253328. Its totient is φ = 5126660.

The previous prime is 7689973. The next prime is 7690013. The reversal of 7689993 is 3999867.

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: 3999867 = 3 ⋅1333289.

It is an interprime number because it is at equal distance from previous prime (7689973) and next prime (7690013).

It is a cyclic number.

It is not a de Polignac number, because 7689993 - 2⁵ = 7689961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7689923) 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, 1281663 + ... + 1281668.

It is an arithmetic number, because the mean of its divisors is an integer number (2563332).

Almost surely, 2^7689993 is an apocalyptic number.

It is an amenable number.

7689993 is a deficient number, since it is larger than the sum of its proper divisors (2563335).

7689993 is a wasteful number, since it uses less digits than its factorization.

7689993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563334.

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

The square root of 7689993 is about 2773.0836626398. The cubic root of 7689993 is about 197.3825012795.

The spelling of 7689993 in words is "seven million, six hundred eighty-nine thousand, nine hundred ninety-three".