780959 has 4 divisors (see below), whose sum is σ = 802104. Its totient is φ = 759816.

The previous prime is 780953. The next prime is 780961. The reversal of 780959 is 959087.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 959087 = 283 ⋅3389.

It is a cyclic number.

It is not a de Polignac number, because 780959 - 2¹⁶ = 715423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 780959.

It is not an unprimeable number, because it can be changed into a prime (780953) 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, 10517 + ... + 10590.

It is an arithmetic number, because the mean of its divisors is an integer number (200526).

2⁷⁸⁰⁹⁵⁹ is an apocalyptic number.

780959 is a deficient number, since it is larger than the sum of its proper divisors (21145).

780959 is a wasteful number, since it uses less digits than its factorization.

780959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21144.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 780959 is about 883.7188466928. The cubic root of 780959 is about 92.0893508121.

The spelling of 780959 in words is "seven hundred eighty thousand, nine hundred fifty-nine".