863442 has 12 divisors (see below), whose sum is σ = 1870830. Its totient is φ = 287808.

The previous prime is 863393. The next prime is 863479. The reversal of 863442 is 244368.

863442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 641601 + 221841 = 801^2 + 471^2 .

It is an unprimeable number.

863442 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23967 + ... + 24002.

2⁸⁶³⁴⁴² is an apocalyptic number.

863442 is an abundant number, since it is smaller than the sum of its proper divisors (1007388).

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

863442 is a wasteful number, since it uses less digits than its factorization.

863442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47977 (or 47974 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 863442 is about 929.2157984021. The cubic root of 863442 is about 95.2235547722.

The spelling of 863442 in words is "eight hundred sixty-three thousand, four hundred forty-two".