813409022 has 4 divisors (see below), whose sum is σ = 1220113536. Its totient is φ = 406704510.

The previous prime is 813409021. The next prime is 813409097. The reversal of 813409022 is 220904318.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813409021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203352254 + ... + 203352257.

It is an arithmetic number, because the mean of its divisors is an integer number (305028384).

Almost surely, 2^813409022 is an apocalyptic number.

813409022 is a deficient number, since it is larger than the sum of its proper divisors (406704514).

813409022 is a wasteful number, since it uses less digits than its factorization.

813409022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406704513.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 813409022 is about 28520.3264707822. The cubic root of 813409022 is about 933.4756528154.

The spelling of 813409022 in words is "eight hundred thirteen million, four hundred nine thousand, twenty-two".