90809363 has 4 divisors (see below), whose sum is σ = 91745640. Its totient is φ = 89873088.

The previous prime is 90809357. The next prime is 90809377. The reversal of 90809363 is 36390809.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90809363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90809333) 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, 467993 + ... + 468186.

It is an arithmetic number, because the mean of its divisors is an integer number (22936410).

Almost surely, 2^90809363 is an apocalyptic number.

90809363 is a deficient number, since it is larger than the sum of its proper divisors (936277).

90809363 is an equidigital number, since it uses as much as digits as its factorization.

90809363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936276.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 90809363 is about 9529.3946817203. The cubic root of 90809363 is about 449.4798318760.

The spelling of 90809363 in words is "ninety million, eight hundred nine thousand, three hundred sixty-three".