809397674 has 8 divisors (see below), whose sum is σ = 1216342308. Its totient is φ = 403950240.

The previous prime is 809397671. The next prime is 809397679. The reversal of 809397674 is 476793908.

It can be written as a sum of positive squares in 2 ways, for example, as 797667049 + 11730625 = 28243^2 + 3425^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×809397674² = 1310249189353220552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (809397671) 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, 372947 + ... + 375110.

Almost surely, 2^809397674 is an apocalyptic number.

809397674 is a deficient number, since it is larger than the sum of its proper divisors (406944634).

809397674 is a wasteful number, since it uses less digits than its factorization.

809397674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748600.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The square root of 809397674 is about 28449.9151844078. The cubic root of 809397674 is about 931.9386368448.

The spelling of 809397674 in words is "eight hundred nine million, three hundred ninety-seven thousand, six hundred seventy-four".