816941392 has 20 divisors (see below), whose sum is σ = 1675931796. Its totient is φ = 384442880.

The previous prime is 816941381. The next prime is 816941453. The reversal of 816941392 is 293149618.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 679957776 + 136983616 = 26076^2 + 11704^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1501459 + ... + 1502002.

Almost surely, 2^816941392 is an apocalyptic number.

It is an amenable number.

816941392 is an abundant number, since it is smaller than the sum of its proper divisors (858990404).

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

816941392 is a wasteful number, since it uses less digits than its factorization.

816941392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003486 (or 3003480 counting only the distinct ones).

The product of its digits is 93312, while the sum is 43.

The square root of 816941392 is about 28582.1866203410. The cubic root of 816941392 is about 934.8249615620.

The spelling of 816941392 in words is "eight hundred sixteen million, nine hundred forty-one thousand, three hundred ninety-two".