78959 has 4 divisors (see below), whose sum is σ = 82416. Its totient is φ = 75504.

The previous prime is 78941. The next prime is 78977. The reversal of 78959 is 95987.

78959 = T₉ + T₁₀ + ... + T₇₇.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (78941) and next prime (78977).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78959 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78919) 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, 1694 + ... + 1739.

It is an arithmetic number, because the mean of its divisors is an integer number (20604).

2⁷⁸⁹⁵⁹ is an apocalyptic number.

78959 is a deficient number, since it is larger than the sum of its proper divisors (3457).

78959 is a wasteful number, since it uses less digits than its factorization.

78959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3456.

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

The square root of 78959 is about 280.9964412586. The cubic root of 78959 is about 42.9009800129.

It can be divided in two parts, 789 and 59, that added together give a palindrome (848).

The spelling of 78959 in words is "seventy-eight thousand, nine hundred fifty-nine".