90493 has 4 divisors (see below), whose sum is σ = 97468. Its totient is φ = 83520.

The previous prime is 90481. The next prime is 90499. The reversal of 90493 is 39409.

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 41209 + 49284 = 203^2 + 222^2 .

It is a cyclic number.

It is not a de Polignac number, because 90493 - 2¹³ = 82301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90499) 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, 3468 + ... + 3493.

It is an arithmetic number, because the mean of its divisors is an integer number (24367).

2⁹⁰⁴⁹³ is an apocalyptic number.

It is an amenable number.

90493 is a deficient number, since it is larger than the sum of its proper divisors (6975).

90493 is a wasteful number, since it uses less digits than its factorization.

90493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6974.

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

The square root of 90493 is about 300.8205445112. The cubic root of 90493 is about 44.8957256394.

The spelling of 90493 in words is "ninety thousand, four hundred ninety-three".