993890 has 16 divisors (see below), whose sum is σ = 1883520. Its totient is φ = 376560.

The previous prime is 993887. The next prime is 993893. The reversal of 993890 is 98399.

993890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (993887) and next prime (993893).

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (993893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2426 + ... + 2805.

It is an arithmetic number, because the mean of its divisors is an integer number (117720).

2⁹⁹³⁸⁹⁰ is an apocalyptic number.

993890 is a deficient number, since it is larger than the sum of its proper divisors (889630).

993890 is a wasteful number, since it uses less digits than its factorization.

993890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5257.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 993890 is about 996.9403191766. The cubic root of 993890 is about 99.7959171184.

The spelling of 993890 in words is "nine hundred ninety-three thousand, eight hundred ninety".