1979447 has 4 divisors (see below), whose sum is σ = 1983216. Its totient is φ = 1975680.

The previous prime is 1979441. The next prime is 1979473. The reversal of 1979447 is 7449791.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7449791 = 17 ⋅438223.

It is a cyclic number.

It is not a de Polignac number, because 1979447 - 2¹⁰ = 1978423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 938 + ... + 2199.

It is an arithmetic number, because the mean of its divisors is an integer number (495804).

2^1979447 is an apocalyptic number.

1979447 is a deficient number, since it is larger than the sum of its proper divisors (3769).

1979447 is an equidigital number, since it uses as much as digits as its factorization.

1979447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3768.

The product of its digits is 63504, while the sum is 41.

The square root of 1979447 is about 1406.9282142313. The cubic root of 1979447 is about 125.5590321375.

The spelling of 1979447 in words is "one million, nine hundred seventy-nine thousand, four hundred forty-seven".