919089 has 6 divisors (see below), whose sum is σ = 1327586. Its totient is φ = 612720.

The previous prime is 919081. The next prime is 919109. The reversal of 919089 is 980919.

It can be written as a sum of positive squares in only one way, i.e., 518400 + 400689 = 720^2 + 633^2 .

It is not a de Polignac number, because 919089 - 2³ = 919081 is a prime.

It is a Duffinian number.

919089 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (919081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51052 + ... + 51069.

2⁹¹⁹⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

919089 is a deficient number, since it is larger than the sum of its proper divisors (408497).

919089 is a wasteful number, since it uses less digits than its factorization.

919089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102127 (or 102124 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 919089 is about 958.6912954648. The cubic root of 919089 is about 97.2267695409.

It can be divided in two parts, 91 and 9089, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 919089 in words is "nine hundred nineteen thousand, eighty-nine".