868390 has 16 divisors (see below), whose sum is σ = 1606032. Its totient is φ = 337824.

The previous prime is 868381. The next prime is 868397. The reversal of 868390 is 93868.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868397) 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 in 7 ways as a sum of consecutive naturals, for example, 804 + ... + 1543.

It is an arithmetic number, because the mean of its divisors is an integer number (100377).

2⁸⁶⁸³⁹⁰ is an apocalyptic number.

868390 is a deficient number, since it is larger than the sum of its proper divisors (737642).

868390 is a wasteful number, since it uses less digits than its factorization.

868390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 868390 is about 931.8744550636. The cubic root of 868390 is about 95.4051029593.

The spelling of 868390 in words is "eight hundred sixty-eight thousand, three hundred ninety".