1983427 has 2 divisors, whose sum is σ = 1983428. Its totient is φ = 1983426.

The previous prime is 1983413. The next prime is 1983437. The reversal of 1983427 is 7243891.

It is a strong prime.

It is an emirp because it is prime and its reverse (7243891) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1983427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1983392 and 1983401.

It is not a weakly prime, because it can be changed into another prime (1983437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991713 + 991714.

It is an arithmetic number, because the mean of its divisors is an integer number (991714).

2^1983427 is an apocalyptic number.

1983427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1983427 is an equidigital number, since it uses as much as digits as its factorization.

1983427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 1983427 is about 1408.3419329126. The cubic root of 1983427 is about 125.6431280820.

The spelling of 1983427 in words is "one million, nine hundred eighty-three thousand, four hundred twenty-seven".