1259887 has 8 divisors (see below), whose sum is σ = 1370736. Its totient is φ = 1153152.

The previous prime is 1259873. The next prime is 1259899. The reversal of 1259887 is 7889521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1259887 - 2⁷ = 1259759 is a prime.

It is a Duffinian number.

1259887 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1259087) 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 7 ways as a sum of consecutive naturals, for example, 373 + ... + 1630.

It is an arithmetic number, because the mean of its divisors is an integer number (171342).

2^1259887 is an apocalyptic number.

1259887 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1259887 is a deficient number, since it is larger than the sum of its proper divisors (110849).

1259887 is a wasteful number, since it uses less digits than its factorization.

1259887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057.

The product of its digits is 40320, while the sum is 40.

The square root of 1259887 is about 1122.4468807030. The cubic root of 1259887 is about 108.0050009115.

The spelling of 1259887 in words is "one million, two hundred fifty-nine thousand, eight hundred eighty-seven".