813949422 has 32 divisors (see below), whose sum is σ = 1912498560. Its totient is φ = 227677920.

The previous prime is 813949397. The next prime is 813949429. The reversal of 813949422 is 224949318.

813949422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813949429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473472 + ... + 475187.

It is an arithmetic number, because the mean of its divisors is an integer number (59765580).

Almost surely, 2^813949422 is an apocalyptic number.

813949422 is an abundant number, since it is smaller than the sum of its proper divisors (1098549138).

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

813949422 is a wasteful number, since it uses less digits than its factorization.

813949422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948688.

The product of its digits is 124416, while the sum is 42.

The square root of 813949422 is about 28529.7988426137. The cubic root of 813949422 is about 933.6823297178.

The spelling of 813949422 in words is "eight hundred thirteen million, nine hundred forty-nine thousand, four hundred twenty-two".