89473729 has 8 divisors (see below), whose sum is σ = 92693160. Its totient is φ = 86263296.

The previous prime is 89473723. The next prime is 89473753. The reversal of 89473729 is 92737498.

It can be written as a sum of positive squares in 4 ways, for example, as 4410000 + 85063729 = 2100^2 + 9223^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89473729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89473723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22929 + ... + 26545.

It is an arithmetic number, because the mean of its divisors is an integer number (11586645).

Almost surely, 2^89473729 is an apocalyptic number.

It is an amenable number.

89473729 is a deficient number, since it is larger than the sum of its proper divisors (3219431).

89473729 is a wasteful number, since it uses less digits than its factorization.

89473729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4499.

The product of its digits is 762048, while the sum is 49.

The square root of 89473729 is about 9459.0553968142. The cubic root of 89473729 is about 447.2652726949.

The spelling of 89473729 in words is "eighty-nine million, four hundred seventy-three thousand, seven hundred twenty-nine".