89612729 has 8 divisors (see below), whose sum is σ = 95725800. Its totient is φ = 83593216.

The previous prime is 89612713. The next prime is 89612741. The reversal of 89612729 is 92721698.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7166329 + 82446400 = 2677^2 + 9080^2 .

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

It is not a de Polignac number, because 89612729 - 2⁴ = 89612713 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89612729.

It is not an unprimeable number, because it can be changed into a prime (89612749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21404 + ... + 25245.

It is an arithmetic number, because the mean of its divisors is an integer number (11965725).

Almost surely, 2^89612729 is an apocalyptic number.

It is an amenable number.

89612729 is a deficient number, since it is larger than the sum of its proper divisors (6113071).

89612729 is a wasteful number, since it uses less digits than its factorization.

89612729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46779.

The product of its digits is 108864, while the sum is 44.

The square root of 89612729 is about 9466.4000021127. The cubic root of 89612729 is about 447.4967659952.

The spelling of 89612729 in words is "eighty-nine million, six hundred twelve thousand, seven hundred twenty-nine".