1439947 has 2 divisors, whose sum is σ = 1439948. Its totient is φ = 1439946.

The previous prime is 1439927. The next prime is 1439969. The reversal of 1439947 is 7499341.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1439947 - 2¹¹ = 1437899 is a prime.

It is not a weakly prime, because it can be changed into another prime (1439927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 719973 + 719974.

It is an arithmetic number, because the mean of its divisors is an integer number (719974).

2^1439947 is an apocalyptic number.

1439947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1439947 is an equidigital number, since it uses as much as digits as its factorization.

1439947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 1439947 is about 1199.9779164635. The cubic root of 1439947 is about 112.9229380346.

The spelling of 1439947 in words is "one million, four hundred thirty-nine thousand, nine hundred forty-seven".