1969829 has 2 divisors, whose sum is σ = 1969830. Its totient is φ = 1969828.

The previous prime is 1969819. The next prime is 1969831. The reversal of 1969829 is 9289691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1965604 + 4225 = 1402^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 1969829 - 2⁸ = 1969573 is a prime.

Together with 1969831, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1969829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1969819) 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, 984914 + 984915.

It is an arithmetic number, because the mean of its divisors is an integer number (984915).

2^1969829 is an apocalyptic number.

It is an amenable number.

1969829 is a deficient number, since it is larger than the sum of its proper divisors (1).

1969829 is an equidigital number, since it uses as much as digits as its factorization.

1969829 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1969829 is about 1403.5059672121. The cubic root of 1969829 is about 125.3553409055.

The spelling of 1969829 in words is "one million, nine hundred sixty-nine thousand, eight hundred twenty-nine".