813933402 has 32 divisors (see below), whose sum is σ = 1675743552. Its totient is φ = 263437824.

The previous prime is 813933389. The next prime is 813933409. The reversal of 813933402 is 204339318.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (813933409) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17653 + ... + 44039.

It is an arithmetic number, because the mean of its divisors is an integer number (52366986).

Almost surely, 2^813933402 is an apocalyptic number.

813933402 is an abundant number, since it is smaller than the sum of its proper divisors (861810150).

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

813933402 is a wasteful number, since it uses less digits than its factorization.

813933402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26542.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 813933402 is about 28529.5180821548. The cubic root of 813933402 is about 933.6762041574.

The spelling of 813933402 in words is "eight hundred thirteen million, nine hundred thirty-three thousand, four hundred two".