1259988 has 12 divisors (see below), whose sum is σ = 2940000. Its totient is φ = 419992.

The previous prime is 1259983. The next prime is 1260011. The reversal of 1259988 is 8899521.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1259983) 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 in 3 ways as a sum of consecutive naturals, for example, 52488 + ... + 52511.

It is an arithmetic number, because the mean of its divisors is an integer number (245000).

2^1259988 is an apocalyptic number.

It is an amenable number.

1259988 is an abundant number, since it is smaller than the sum of its proper divisors (1680012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1259988 is a wasteful number, since it uses less digits than its factorization.

1259988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105006 (or 105004 counting only the distinct ones).

The product of its digits is 51840, while the sum is 42.

The square root of 1259988 is about 1122.4918707946. The cubic root of 1259988 is about 108.0078869412.

The spelling of 1259988 in words is "one million, two hundred fifty-nine thousand, nine hundred eighty-eight".