863390 has 32 divisors (see below), whose sum is σ = 1741824. Its totient is φ = 305440.

The previous prime is 863377. The next prime is 863393. The reversal of 863390 is 93368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5087 + ... + 5253.

It is an arithmetic number, because the mean of its divisors is an integer number (54432).

2⁸⁶³³⁹⁰ is an apocalyptic number.

863390 is an abundant number, since it is smaller than the sum of its proper divisors (878434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

863390 is a wasteful number, since it uses less digits than its factorization.

863390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 863390 is about 929.1878173975. The cubic root of 863390 is about 95.2216431502.

The spelling of 863390 in words is "eight hundred sixty-three thousand, three hundred ninety".