1979144 has 8 divisors (see below), whose sum is σ = 3710910. Its totient is φ = 989568.

The previous prime is 1979143. The next prime is 1979147. The reversal of 1979144 is 4419791.

It can be written as a sum of positive squares in only one way, i.e., 1276900 + 702244 = 1130^2 + 838^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1979141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123689 + ... + 123704.

2^1979144 is an apocalyptic number.

It is an amenable number.

1979144 is a deficient number, since it is larger than the sum of its proper divisors (1731766).

1979144 is a wasteful number, since it uses less digits than its factorization.

1979144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247399 (or 247395 counting only the distinct ones).

The product of its digits is 9072, while the sum is 35.

The square root of 1979144 is about 1406.8205287100. The cubic root of 1979144 is about 125.5526252423.

The spelling of 1979144 in words is "one million, nine hundred seventy-nine thousand, one hundred forty-four".