1926289 has 2 divisors, whose sum is σ = 1926290. Its totient is φ = 1926288.

The previous prime is 1926283. The next prime is 1926293. The reversal of 1926289 is 9826291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1868689 + 57600 = 1367^2 + 240^2 .

It is an emirp because it is prime and its reverse (9826291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1926289 - 2⁷ = 1926161 is a prime.

1926289 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1926283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 963144 + 963145.

It is an arithmetic number, because the mean of its divisors is an integer number (963145).

2^1926289 is an apocalyptic number.

It is an amenable number.

1926289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1926289 is an equidigital number, since it uses as much as digits as its factorization.

1926289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 37.

The square root of 1926289 is about 1387.9081381705. The cubic root of 1926289 is about 124.4248564041.

The spelling of 1926289 in words is "one million, nine hundred twenty-six thousand, two hundred eighty-nine".