69240089 has 4 divisors (see below), whose sum is σ = 69256740. Its totient is φ = 69223440.

The previous prime is 69240079. The next prime is 69240109. The reversal of 69240089 is 98004296.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 67600 + 69172489 = 260^2 + 8317^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69240089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (69240029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3779 + ... + 12359.

It is an arithmetic number, because the mean of its divisors is an integer number (17314185).

Almost surely, 2^69240089 is an apocalyptic number.

It is an amenable number.

69240089 is a deficient number, since it is larger than the sum of its proper divisors (16651).

69240089 is an equidigital number, since it uses as much as digits as its factorization.

69240089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16650.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 69240089 is about 8321.0629729620. The cubic root of 69240089 is about 410.6317624936.

The spelling of 69240089 in words is "sixty-nine million, two hundred forty thousand, eighty-nine".