1982969 has 2 divisors, whose sum is σ = 1982970. Its totient is φ = 1982968.

The previous prime is 1982957. The next prime is 1982987. The reversal of 1982969 is 9692891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1638400 + 344569 = 1280^2 + 587^2 .

It is a cyclic number.

It is not a de Polignac number, because 1982969 - 2⁸ = 1982713 is a prime.

It is a super-2 number, since 2×1982969² = 7864332109922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1982909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991484 + 991485.

It is an arithmetic number, because the mean of its divisors is an integer number (991485).

2^1982969 is an apocalyptic number.

It is an amenable number.

1982969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982969 is an equidigital number, since it uses as much as digits as its factorization.

1982969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 44.

The square root of 1982969 is about 1408.1793209673. The cubic root of 1982969 is about 125.6334564409.

The spelling of 1982969 in words is "one million, nine hundred eighty-two thousand, nine hundred sixty-nine".