1982417 has 2 divisors, whose sum is σ = 1982418. Its totient is φ = 1982416.

The previous prime is 1982401. The next prime is 1982437. The reversal of 1982417 is 7142891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1752976 + 229441 = 1324^2 + 479^2 .

It is a cyclic number.

It is not a de Polignac number, because 1982417 - 2⁴ = 1982401 is a prime.

It is a Chen prime.

It is a plaindrome in base 11.

It is not a weakly prime, because it can be changed into another prime (1982437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991208 + 991209.

It is an arithmetic number, because the mean of its divisors is an integer number (991209).

2^1982417 is an apocalyptic number.

It is an amenable number.

1982417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982417 is an equidigital number, since it uses as much as digits as its factorization.

1982417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 32.

The square root of 1982417 is about 1407.9833095602. The cubic root of 1982417 is about 125.6217978112.

The spelling of 1982417 in words is "one million, nine hundred eighty-two thousand, four hundred seventeen".