1087759489 has 4 divisors (see below), whose sum is σ = 1088489556. Its totient is φ = 1087029424.

The previous prime is 1087759487. The next prime is 1087759499. The reversal of 1087759489 is 9849577801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 720385600 + 367373889 = 26840^2 + 19167^2 .

It is a cyclic number.

It is not a de Polignac number, because 1087759489 - 2¹ = 1087759487 is a prime.

It is a super-2 number, since 2×1087759489² = 2366441411819082242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1087759483) 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, 362794 + ... + 365779.

It is an arithmetic number, because the mean of its divisors is an integer number (272122389).

Almost surely, 2^1087759489 is an apocalyptic number.

It is an amenable number.

1087759489 is a deficient number, since it is larger than the sum of its proper divisors (730067).

1087759489 is an equidigital number, since it uses as much as digits as its factorization.

1087759489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730066.

The product of its (nonzero) digits is 5080320, while the sum is 58.

The square root of 1087759489 is about 32981.1990230798. The cubic root of 1087759489 is about 1028.4368437288.

The spelling of 1087759489 in words is "one billion, eighty-seven million, seven hundred fifty-nine thousand, four hundred eighty-nine".