78922 has 4 divisors (see below), whose sum is σ = 118386. Its totient is φ = 39460.

The previous prime is 78919. The next prime is 78929. The reversal of 78922 is 22987.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22987 = 127 ⋅181.

It can be written as a sum of positive squares in only one way, i.e., 72361 + 6561 = 269^2 + 81^2 .

It is a d-powerful number, because it can be written as 7⁴ + 8² + 9⁵ + 2¹⁰ + 2¹⁴ .

It is a plaindrome in base 13 and base 16.

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

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19729 + ... + 19732.

2⁷⁸⁹²² is an apocalyptic number.

78922 is a deficient number, since it is larger than the sum of its proper divisors (39464).

78922 is a wasteful number, since it uses less digits than its factorization.

78922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39463.

The product of its digits is 2016, while the sum is 28.

The square root of 78922 is about 280.9305964113. The cubic root of 78922 is about 42.8942778667.

It can be divided in two parts, 78 and 922, that added together give a cube (1000 = 10³).

The spelling of 78922 in words is "seventy-eight thousand, nine hundred twenty-two".