90394 has 4 divisors (see below), whose sum is σ = 135594. Its totient is φ = 45196.

The previous prime is 90379. The next prime is 90397. The reversal of 90394 is 49309.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49309 = 13 ⋅3793.

It can be written as a sum of positive squares in only one way, i.e., 56169 + 34225 = 237^2 + 185^2 .

It is not an unprimeable number, because it can be changed into a prime (90397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22597 + ... + 22600.

2⁹⁰³⁹⁴ is an apocalyptic number.

90394 is a deficient number, since it is larger than the sum of its proper divisors (45200).

90394 is a wasteful number, since it uses less digits than its factorization.

90394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45199.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 90394 is about 300.6559495503. The cubic root of 90394 is about 44.8793475820.

It can be divided in two parts, 90 and 394, that added together give a palindrome (484).

The spelling of 90394 in words is "ninety thousand, three hundred ninety-four".