90667289 has 4 divisors (see below), whose sum is σ = 92153700. Its totient is φ = 89180880.

The previous prime is 90667271. The next prime is 90667301. The reversal of 90667289 is 98276609.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1459264 + 89208025 = 1208^2 + 9445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90667289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90667229) 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, 743114 + ... + 743235.

It is an arithmetic number, because the mean of its divisors is an integer number (23038425).

Almost surely, 2^90667289 is an apocalyptic number.

It is an amenable number.

90667289 is a deficient number, since it is larger than the sum of its proper divisors (1486411).

90667289 is a wasteful number, since it uses less digits than its factorization.

90667289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486410.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 90667289 is about 9521.9372503709. The cubic root of 90667289 is about 449.2453012512.

The spelling of 90667289 in words is "ninety million, six hundred sixty-seven thousand, two hundred eighty-nine".