89439009 has 8 divisors (see below), whose sum is σ = 130093152. Its totient is φ = 54205440.

The previous prime is 89438977. The next prime is 89439043. The reversal of 89439009 is 90093498.

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

It is not a de Polignac number, because 89439009 - 2⁵ = 89438977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89439079) 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, 1355104 + ... + 1355169.

It is an arithmetic number, because the mean of its divisors is an integer number (16261644).

Almost surely, 2^89439009 is an apocalyptic number.

It is an amenable number.

89439009 is a deficient number, since it is larger than the sum of its proper divisors (40654143).

89439009 is a wasteful number, since it uses less digits than its factorization.

89439009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710287.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 89439009 is about 9457.2199403419. The cubic root of 89439009 is about 447.2074119145.

It can be divided in two parts, 894 and 39009, that added together give a triangular number (39903 = T₂₈₂).

The spelling of 89439009 in words is "eighty-nine million, four hundred thirty-nine thousand, nine".