816429 has 8 divisors (see below), whose sum is σ = 1104192. Its totient is φ = 536480.

The previous prime is 816427. The next prime is 816443. The reversal of 816429 is 924618.

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 816429 - 2¹ = 816427 is a prime.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 816396 and 816405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816427) 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, 1704 + ... + 2129.

It is an arithmetic number, because the mean of its divisors is an integer number (138024).

2⁸¹⁶⁴²⁹ is an apocalyptic number.

It is an amenable number.

816429 is a deficient number, since it is larger than the sum of its proper divisors (287763).

816429 is a wasteful number, since it uses less digits than its factorization.

816429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907.

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

The square root of 816429 is about 903.5646075406. The cubic root of 816429 is about 93.4629477522.

The spelling of 816429 in words is "eight hundred sixteen thousand, four hundred twenty-nine".