768939 has 4 divisors (see below), whose sum is σ = 1025256. Its totient is φ = 512624.

The previous prime is 768931. The next prime is 768941. The reversal of 768939 is 939867.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939867 = 3 ⋅313289.

It is a cyclic number.

It is not a de Polignac number, because 768939 - 2³ = 768931 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 768939.

It is not an unprimeable number, because it can be changed into a prime (768931) 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, 128154 + ... + 128159.

It is an arithmetic number, because the mean of its divisors is an integer number (256314).

2⁷⁶⁸⁹³⁹ is an apocalyptic number.

768939 is a deficient number, since it is larger than the sum of its proper divisors (256317).

768939 is a wasteful number, since it uses less digits than its factorization.

768939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256316.

The product of its digits is 81648, while the sum is 42.

The square root of 768939 is about 876.8916694780. The cubic root of 768939 is about 91.6144466577.

The spelling of 768939 in words is "seven hundred sixty-eight thousand, nine hundred thirty-nine".