809720414 has 4 divisors (see below), whose sum is σ = 1214580624. Its totient is φ = 404860206.

The previous prime is 809720411. The next prime is 809720419. The reversal of 809720414 is 414027908.

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 (809720411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202430102 + ... + 202430105.

It is an arithmetic number, because the mean of its divisors is an integer number (303645156).

Almost surely, 2^809720414 is an apocalyptic number.

809720414 is a deficient number, since it is larger than the sum of its proper divisors (404860210).

809720414 is a wasteful number, since it uses less digits than its factorization.

809720414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404860209.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 809720414 is about 28455.5866922473. The cubic root of 809720414 is about 932.0624877516.

The spelling of 809720414 in words is "eight hundred nine million, seven hundred twenty thousand, four hundred fourteen".