78923 has 6 divisors (see below), whose sum is σ = 85644. Its totient is φ = 72696.

The previous prime is 78919. The next prime is 78929. The reversal of 78923 is 32987.

It is not a de Polignac number, because 78923 - 2² = 78919 is a prime.

It is a super-4 number, since 4×78923⁴ (a number of 21 digits) contains 4444 as substring.

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

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (78929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65 + ... + 402.

It is an arithmetic number, because the mean of its divisors is an integer number (14274).

2⁷⁸⁹²³ is an apocalyptic number.

78923 is a deficient number, since it is larger than the sum of its proper divisors (6721).

78923 is a wasteful number, since it uses less digits than its factorization.

78923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 480 counting only the distinct ones).

The product of its digits is 3024, while the sum is 29.

The square root of 78923 is about 280.9323762047. The cubic root of 78923 is about 42.8944590334.

It can be divided in two parts, 78 and 923, that added together give a palindrome (1001).

The spelling of 78923 in words is "seventy-eight thousand, nine hundred twenty-three".