89792009 has 8 divisors (see below), whose sum is σ = 92457288. Its totient is φ = 87149440.

The previous prime is 89791997. The next prime is 89792029. The reversal of 89792009 is 90029798.

It can be written as a sum of positive squares in 4 ways, for example, as 3822025 + 85969984 = 1955^2 + 9272^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 89792009 - 2⁸ = 89791753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89792029) 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, 2519 + ... + 13635.

It is an arithmetic number, because the mean of its divisors is an integer number (11557161).

Almost surely, 2^89792009 is an apocalyptic number.

It is an amenable number.

89792009 is a deficient number, since it is larger than the sum of its proper divisors (2665279).

89792009 is a wasteful number, since it uses less digits than its factorization.

89792009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11355.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 89792009 is about 9475.8645515858. The cubic root of 89792009 is about 447.7949891732.

The spelling of 89792009 in words is "eighty-nine million, seven hundred ninety-two thousand, nine".