816249 has 16 divisors (see below), whose sum is σ = 1271808. Its totient is φ = 455952.

The previous prime is 816239. The next prime is 816251. The reversal of 816249 is 942618.

It is not a de Polignac number, because 816249 - 2⁵ = 816217 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816209) 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 15 ways as a sum of consecutive naturals, for example, 574 + ... + 1400.

It is an arithmetic number, because the mean of its divisors is an integer number (79488).

2⁸¹⁶²⁴⁹ is an apocalyptic number.

It is an amenable number.

816249 is a deficient number, since it is larger than the sum of its proper divisors (455559).

816249 is a wasteful number, since it uses less digits than its factorization.

816249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884.

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

The square root of 816249 is about 903.4649965549. The cubic root of 816249 is about 93.4560785829.

The spelling of 816249 in words is "eight hundred sixteen thousand, two hundred forty-nine".