89769729 has 16 divisors (see below), whose sum is σ = 138442752. Its totient is φ = 50677968.

The previous prime is 89769697. The next prime is 89769731. The reversal of 89769729 is 92796798.

It is not a de Polignac number, because 89769729 - 2⁵ = 89769697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (89769629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24009 + ... + 27494.

It is an arithmetic number, because the mean of its divisors is an integer number (8652672).

Almost surely, 2^89769729 is an apocalyptic number.

It is an amenable number.

89769729 is a deficient number, since it is larger than the sum of its proper divisors (48673023).

89769729 is a wasteful number, since it uses less digits than its factorization.

89769729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51596.

The product of its digits is 3429216, while the sum is 57.

The square root of 89769729 is about 9474.6888603268. The cubic root of 89769729 is about 447.7579491375.

The spelling of 89769729 in words is "eighty-nine million, seven hundred sixty-nine thousand, seven hundred twenty-nine".