890493 has 4 divisors (see below), whose sum is σ = 1187328. Its totient is φ = 593660.

The previous prime is 890467. The next prime is 890501. The reversal of 890493 is 394098.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 890493 - 2⁶ = 890429 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148413 + ... + 148418.

It is an arithmetic number, because the mean of its divisors is an integer number (296832).

2⁸⁹⁰⁴⁹³ is an apocalyptic number.

It is an amenable number.

890493 is a deficient number, since it is larger than the sum of its proper divisors (296835).

890493 is a wasteful number, since it uses less digits than its factorization.

890493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296834.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 890493 is about 943.6593665089. The cubic root of 890493 is about 96.2077748106.

The spelling of 890493 in words is "eight hundred ninety thousand, four hundred ninety-three".