1889469 has 12 divisors (see below), whose sum is σ = 2749500. Its totient is φ = 1250304.

The previous prime is 1889453. The next prime is 1889471. The reversal of 1889469 is 9649881.

1889469 is a `hidden beast` number, since 188 + 9 + 469 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 99225 + 1790244 = 315^2 + 1338^2 .

It is not a de Polignac number, because 1889469 - 2⁴ = 1889453 is a prime.

It is a super-2 number, since 2×1889469² = 7140186203922, which contains 22 as substring.

It is a Curzon number.

1889469 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1889429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 637 + ... + 2045.

It is an arithmetic number, because the mean of its divisors is an integer number (229125).

2^1889469 is an apocalyptic number.

It is an amenable number.

1889469 is a deficient number, since it is larger than the sum of its proper divisors (860031).

1889469 is a wasteful number, since it uses less digits than its factorization.

1889469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564 (or 1561 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 1889469 is about 1374.5795720874. The cubic root of 1889469 is about 123.6269790605.

The spelling of 1889469 in words is "one million, eight hundred eighty-nine thousand, four hundred sixty-nine".