1087859 has 4 divisors (see below), whose sum is σ = 1089960. Its totient is φ = 1085760.

The previous prime is 1087843. The next prime is 1087861. The reversal of 1087859 is 9587801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9587801 = 277 ⋅34613.

It is a cyclic number.

It is not a de Polignac number, because 1087859 - 2⁴ = 1087843 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344 + ... + 1514.

It is an arithmetic number, because the mean of its divisors is an integer number (272490).

2^1087859 is an apocalyptic number.

1087859 is a deficient number, since it is larger than the sum of its proper divisors (2101).

1087859 is an equidigital number, since it uses as much as digits as its factorization.

1087859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 1087859 is about 1043.0047938528. The cubic root of 1087859 is about 102.8468204110.

The spelling of 1087859 in words is "one million, eighty-seven thousand, eight hundred fifty-nine".