79774 has 4 divisors (see below), whose sum is σ = 119664. Its totient is φ = 39886.

The previous prime is 79769. The next prime is 79777. The reversal of 79774 is 47797.

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

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 (79777) by changing a digit.

79774 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19942 + ... + 19945.

It is an arithmetic number, because the mean of its divisors is an integer number (29916).

2⁷⁹⁷⁷⁴ is an apocalyptic number.

79774 is a deficient number, since it is larger than the sum of its proper divisors (39890).

79774 is a wasteful number, since it uses less digits than its factorization.

79774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39889.

The product of its digits is 12348, while the sum is 34.

The square root of 79774 is about 282.4429145863. The cubic root of 79774 is about 43.0480803456.

The spelling of 79774 in words is "seventy-nine thousand, seven hundred seventy-four".