811961446 has 8 divisors (see below), whose sum is σ = 1289585880. Its totient is φ = 382099488.

The previous prime is 811961377. The next prime is 811961461. The reversal of 811961446 is 644169118.

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

It is a junction number, because it is equal to n+sod(n) for n = 811961399 and 811961408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11940576 + ... + 11940643.

It is an arithmetic number, because the mean of its divisors is an integer number (161198235).

Almost surely, 2^811961446 is an apocalyptic number.

811961446 is a deficient number, since it is larger than the sum of its proper divisors (477624434).

811961446 is a wasteful number, since it uses less digits than its factorization.

811961446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23881238.

The product of its digits is 41472, while the sum is 40.

The square root of 811961446 is about 28494.9371994395. The cubic root of 811961446 is about 932.9215735005.

The spelling of 811961446 in words is "eight hundred eleven million, nine hundred sixty-one thousand, four hundred forty-six".