1969423 has 2 divisors, whose sum is σ = 1969424. Its totient is φ = 1969422.

The previous prime is 1969411. The next prime is 1969447. The reversal of 1969423 is 3249691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1969423 - 2¹³ = 1961231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1969403) 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, 984711 + 984712.

It is an arithmetic number, because the mean of its divisors is an integer number (984712).

2^1969423 is an apocalyptic number.

1969423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1969423 is an equidigital number, since it uses as much as digits as its factorization.

1969423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 34.

The square root of 1969423 is about 1403.3613219695. The cubic root of 1969423 is about 125.3467280149.

The spelling of 1969423 in words is "one million, nine hundred sixty-nine thousand, four hundred twenty-three".