861429 has 8 divisors (see below), whose sum is σ = 1160352. Its totient is φ = 568400.

The previous prime is 861391. The next prime is 861433. The reversal of 861429 is 924168.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 861429 - 2⁹ = 860917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 861396 and 861405.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 861429.

It is not an unprimeable number, because it can be changed into a prime (861439) 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 7 ways as a sum of consecutive naturals, for example, 1119 + ... + 1724.

It is an arithmetic number, because the mean of its divisors is an integer number (145044).

2⁸⁶¹⁴²⁹ is an apocalyptic number.

It is an amenable number.

861429 is a deficient number, since it is larger than the sum of its proper divisors (298923).

861429 is a wasteful number, since it uses less digits than its factorization.

861429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2947.

The product of its digits is 3456, while the sum is 30.

The square root of 861429 is about 928.1319949231. The cubic root of 861429 is about 95.1494968460.

The spelling of 861429 in words is "eight hundred sixty-one thousand, four hundred twenty-nine".