89655729 has 4 divisors (see below), whose sum is σ = 119540976. Its totient is φ = 59770484.

The previous prime is 89655719. The next prime is 89655749. The reversal of 89655729 is 92755698.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 89655729 - 2⁵ = 89655697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89655719) 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 3 ways as a sum of consecutive naturals, for example, 14942619 + ... + 14942624.

It is an arithmetic number, because the mean of its divisors is an integer number (29885244).

Almost surely, 2^89655729 is an apocalyptic number.

It is an amenable number.

89655729 is a deficient number, since it is larger than the sum of its proper divisors (29885247).

89655729 is a wasteful number, since it uses less digits than its factorization.

89655729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29885246.

The product of its digits is 1360800, while the sum is 51.

The square root of 89655729 is about 9468.6709204619. The cubic root of 89655729 is about 447.5683305456.

The spelling of 89655729 in words is "eighty-nine million, six hundred fifty-five thousand, seven hundred twenty-nine".