78969 has 8 divisors (see below), whose sum is σ = 114912. Its totient is φ = 47840.

The previous prime is 78941. The next prime is 78977. The reversal of 78969 is 96987.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78969 - 2⁸ = 78713 is a prime.

It is a super-2 number, since 2×78969² = 12472205922, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

78969 is a lucky number.

It is a plaindrome in base 16.

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 7 ways as a sum of consecutive naturals, for example, 1164 + ... + 1229.

It is an arithmetic number, because the mean of its divisors is an integer number (14364).

2⁷⁸⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

78969 is a deficient number, since it is larger than the sum of its proper divisors (35943).

78969 is a wasteful number, since it uses less digits than its factorization.

78969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407.

The product of its digits is 27216, while the sum is 39.

The square root of 78969 is about 281.0142345149. The cubic root of 78969 is about 42.9027910443.

It can be divided in two parts, 789 and 69, that added together give a palindrome (858).

The spelling of 78969 in words is "seventy-eight thousand, nine hundred sixty-nine".