813443407 has 4 divisors (see below), whose sum is σ = 929649616. Its totient is φ = 697237200.

The previous prime is 813443401. The next prime is 813443419. The reversal of 813443407 is 704344318.

813443407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 813443407 - 2³ = 813443399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813443401) 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, 58103094 + ... + 58103107.

It is an arithmetic number, because the mean of its divisors is an integer number (232412404).

Almost surely, 2^813443407 is an apocalyptic number.

813443407 is a deficient number, since it is larger than the sum of its proper divisors (116206209).

813443407 is a wasteful number, since it uses less digits than its factorization.

813443407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116206208.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 813443407 is about 28520.9292800918. The cubic root of 813443407 is about 933.4888061439.

The spelling of 813443407 in words is "eight hundred thirteen million, four hundred forty-three thousand, four hundred seven".