864492 has 24 divisors (see below), whose sum is σ = 2051952. Its totient is φ = 283200.

The previous prime is 864491. The next prime is 864503. The reversal of 864492 is 294468.

864492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (864491) 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, 142 + ... + 1322.

It is an arithmetic number, because the mean of its divisors is an integer number (85498).

2⁸⁶⁴⁴⁹² is an apocalyptic number.

It is an amenable number.

864492 is an abundant number, since it is smaller than the sum of its proper divisors (1187460).

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

864492 is a wasteful number, since it uses less digits than its factorization.

864492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249 (or 1247 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 864492 is about 929.7806192861. The cubic root of 864492 is about 95.2621384218.

The spelling of 864492 in words is "eight hundred sixty-four thousand, four hundred ninety-two".