1089487129 has 4 divisors (see below), whose sum is σ = 1089802000. Its totient is φ = 1089172260.

The previous prime is 1089487117. The next prime is 1089487141. The reversal of 1089487129 is 9217849801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9217849801 = 487 ⋅18927823.

It is an interprime number because it is at equal distance from previous prime (1089487117) and next prime (1089487141).

It is a cyclic number.

It is not a de Polignac number, because 1089487129 - 2⁹ = 1089486617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1089487169) 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, 152187 + ... + 159184.

It is an arithmetic number, because the mean of its divisors is an integer number (272450500).

Almost surely, 2^1089487129 is an apocalyptic number.

It is an amenable number.

1089487129 is a deficient number, since it is larger than the sum of its proper divisors (314871).

1089487129 is an equidigital number, since it uses as much as digits as its factorization.

1089487129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314870.

The product of its (nonzero) digits is 290304, while the sum is 49.

The square root of 1089487129 is about 33007.3799172246. The cubic root of 1089487129 is about 1028.9810292225.

The spelling of 1089487129 in words is "one billion, eighty-nine million, four hundred eighty-seven thousand, one hundred twenty-nine".