979812 has 36 divisors (see below), whose sum is σ = 2624076. Its totient is φ = 307200.

The previous prime is 979807. The next prime is 979819. The reversal of 979812 is 218979.

It is a happy number.

979812 is nontrivially palindromic in base 5.

It can be written as a sum of positive squares in 2 ways, for example, as 910116 + 69696 = 954^2 + 264^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 979812.

It is not an unprimeable number, because it can be changed into a prime (979819) by changing a digit.

979812 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189 + ... + 1412.

It is an arithmetic number, because the mean of its divisors is an integer number (72891).

2⁹⁷⁹⁸¹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 979812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1312038).

979812 is an abundant number, since it is smaller than the sum of its proper divisors (1644264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

979812 is a wasteful number, since it uses less digits than its factorization.

979812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628 (or 1623 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 979812 is about 989.8545347676. The cubic root of 979812 is about 99.3224867917.

The spelling of 979812 in words is "nine hundred seventy-nine thousand, eight hundred twelve".