811443442 has 8 divisors (see below), whose sum is σ = 1218413916. Its totient is φ = 405305472.

The previous prime is 811443397. The next prime is 811443449. The reversal of 811443442 is 244344118.

811443442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 803212281 + 8231161 = 28341^2 + 2869^2 .

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

It is a super-3 number, since 3×811443442³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (811443449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205683 + ... + 209590.

Almost surely, 2^811443442 is an apocalyptic number.

811443442 is a deficient number, since it is larger than the sum of its proper divisors (406970474).

811443442 is a wasteful number, since it uses less digits than its factorization.

811443442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416252.

The product of its digits is 12288, while the sum is 31.

The square root of 811443442 is about 28485.8463451589. The cubic root of 811443442 is about 932.7231404703.

The spelling of 811443442 in words is "eight hundred eleven million, four hundred forty-three thousand, four hundred forty-two".