81094446 has 24 divisors (see below), whose sum is σ = 182213304. Its totient is φ = 27031320.

The previous prime is 81094427. The next prime is 81094457. The reversal of 81094446 is 64449018.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 81094446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82945 + ... + 83916.

It is an arithmetic number, because the mean of its divisors is an integer number (7592221).

Almost surely, 2^81094446 is an apocalyptic number.

81094446 is an abundant number, since it is smaller than the sum of its proper divisors (101118858).

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

81094446 is a wasteful number, since it uses less digits than its factorization.

81094446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166878 (or 166866 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 81094446 is about 9005.2454713905. The cubic root of 81094446 is about 432.8429720738.

The spelling of 81094446 in words is "eighty-one million, ninety-four thousand, four hundred forty-six".