1984947 has 8 divisors (see below), whose sum is σ = 2684160. Its totient is φ = 1304520.

The previous prime is 1984921. The next prime is 1984979. The reversal of 1984947 is 7494891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1984947 - 2¹⁴ = 1968563 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1984899 and 1984908.

It is not an unprimeable number, because it can be changed into a prime (1984907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4447 + ... + 4872.

It is an arithmetic number, because the mean of its divisors is an integer number (335520).

2^1984947 is an apocalyptic number.

1984947 is a deficient number, since it is larger than the sum of its proper divisors (699213).

1984947 is an equidigital number, since it uses as much as digits as its factorization.

1984947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9393.

The product of its digits is 72576, while the sum is 42.

The square root of 1984947 is about 1408.8814712388. The cubic root of 1984947 is about 125.6752154389.

The spelling of 1984947 in words is "one million, nine hundred eighty-four thousand, nine hundred forty-seven".