1969001 has 2 divisors, whose sum is σ = 1969002. Its totient is φ = 1969000.

The previous prime is 1968997. The next prime is 1969021. The reversal of 1969001 is 1009691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1893376 + 75625 = 1376^2 + 275^2 .

It is a cyclic number.

It is not a de Polignac number, because 1969001 - 2² = 1968997 is a prime.

It is not a weakly prime, because it can be changed into another prime (1969021) 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, 984500 + 984501.

It is an arithmetic number, because the mean of its divisors is an integer number (984501).

2^1969001 is an apocalyptic number.

It is an amenable number.

1969001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1969001 is an equidigital number, since it uses as much as digits as its factorization.

1969001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 1969001 is about 1403.2109606185. The cubic root of 1969001 is about 125.3377744453.

The spelling of 1969001 in words is "one million, nine hundred sixty-nine thousand, one".