1924289 has 2 divisors, whose sum is σ = 1924290. Its totient is φ = 1924288.

The previous prime is 1924283. The next prime is 1924291. The reversal of 1924289 is 9824291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1669264 + 255025 = 1292^2 + 505^2 .

It is an emirp because it is prime and its reverse (9824291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1924289 - 2⁸ = 1924033 is a prime.

Together with 1924291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1924283) 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, 962144 + 962145.

It is an arithmetic number, because the mean of its divisors is an integer number (962145).

2^1924289 is an apocalyptic number.

It is an amenable number.

1924289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1924289 is an equidigital number, since it uses as much as digits as its factorization.

1924289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 1924289 is about 1387.1874422730. The cubic root of 1924289 is about 124.3817794677.

The spelling of 1924289 in words is "one million, nine hundred twenty-four thousand, two hundred eighty-nine".