90487 has 4 divisors (see below), whose sum is σ = 92736. Its totient is φ = 88240.

The previous prime is 90481. The next prime is 90499. The reversal of 90487 is 78409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78409 = 89 ⋅881.

It is a cyclic number.

It is not a de Polignac number, because 90487 - 2⁷ = 90359 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90481) 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, 1063 + ... + 1144.

It is an arithmetic number, because the mean of its divisors is an integer number (23184).

2⁹⁰⁴⁸⁷ is an apocalyptic number.

90487 is a deficient number, since it is larger than the sum of its proper divisors (2249).

90487 is a wasteful number, since it uses less digits than its factorization.

90487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2248.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 90487 is about 300.8105716227. The cubic root of 90487 is about 44.8947333700.

It can be divided in two parts, 9048 and 7, that multiplied together give a palindrome (63336).

The spelling of 90487 in words is "ninety thousand, four hundred eighty-seven".