1982447 has 2 divisors, whose sum is σ = 1982448. Its totient is φ = 1982446.

The previous prime is 1982443. The next prime is 1982467. The reversal of 1982447 is 7442891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1982447 - 2² = 1982443 is a prime.

It is a super-2 number, since 2×1982447² = 7860192215618, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1982443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991223 + 991224.

It is an arithmetic number, because the mean of its divisors is an integer number (991224).

2^1982447 is an apocalyptic number.

1982447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982447 is an equidigital number, since it uses as much as digits as its factorization.

1982447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 35.

The square root of 1982447 is about 1407.9939630552. The cubic root of 1982447 is about 125.6224314880.

The spelling of 1982447 in words is "one million, nine hundred eighty-two thousand, four hundred forty-seven".