1889039 has 2 divisors, whose sum is σ = 1889040. Its totient is φ = 1889038.

The previous prime is 1889029. The next prime is 1889051. The reversal of 1889039 is 9309881.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1889039 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1888993 and 1889011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1889009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 944519 + 944520.

It is an arithmetic number, because the mean of its divisors is an integer number (944520).

2^1889039 is an apocalyptic number.

1889039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1889039 is an equidigital number, since it uses as much as digits as its factorization.

1889039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 1889039 is about 1374.4231517258. The cubic root of 1889039 is about 123.6176001232.

The spelling of 1889039 in words is "one million, eight hundred eighty-nine thousand, thirty-nine".