1959889 has 2 divisors, whose sum is σ = 1959890. Its totient is φ = 1959888.

The previous prime is 1959883. The next prime is 1959941. The reversal of 1959889 is 9889591.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1638400 + 321489 = 1280^2 + 567^2 .

It is a cyclic number.

It is not a de Polignac number, because 1959889 - 2⁵ = 1959857 is a prime.

It is not a weakly prime, because it can be changed into another prime (1959883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 979944 + 979945.

It is an arithmetic number, because the mean of its divisors is an integer number (979945).

2^1959889 is an apocalyptic number.

It is an amenable number.

1959889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1959889 is an equidigital number, since it uses as much as digits as its factorization.

1959889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 49.

The square root of 1959889 is about 1399.9603565816. The cubic root of 1959889 is about 125.1441324096.

The spelling of 1959889 in words is "one million, nine hundred fifty-nine thousand, eight hundred eighty-nine".