861934 has 16 divisors (see below), whose sum is σ = 1388016. Its totient is φ = 400000.

The previous prime is 861929. The next prime is 861937. The reversal of 861934 is 439168.

It is a junction number, because it is equal to n+sod(n) for n = 861896 and 861905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861937) 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, 3309 + ... + 3559.

It is an arithmetic number, because the mean of its divisors is an integer number (86751).

2⁸⁶¹⁹³⁴ is an apocalyptic number.

861934 is a deficient number, since it is larger than the sum of its proper divisors (526082).

861934 is a wasteful number, since it uses less digits than its factorization.

861934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371.

The product of its digits is 5184, while the sum is 31.

The square root of 861934 is about 928.4040068849. The cubic root of 861934 is about 95.1680865419.

The spelling of 861934 in words is "eight hundred sixty-one thousand, nine hundred thirty-four".