817294449 has 4 divisors (see below), whose sum is σ = 1089725936. Its totient is φ = 544862964.

The previous prime is 817294427. The next prime is 817294463. The reversal of 817294449 is 944492718.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 817294449 - 2⁷ = 817294321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 817294398 and 817294407.

It is not an unprimeable number, because it can be changed into a prime (817294469) 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, 136215739 + ... + 136215744.

It is an arithmetic number, because the mean of its divisors is an integer number (272431484).

Almost surely, 2^817294449 is an apocalyptic number.

It is an amenable number.

817294449 is a deficient number, since it is larger than the sum of its proper divisors (272431487).

817294449 is a wasteful number, since it uses less digits than its factorization.

817294449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272431486.

The product of its digits is 580608, while the sum is 48.

The square root of 817294449 is about 28588.3621251725. The cubic root of 817294449 is about 934.9596097206.

The spelling of 817294449 in words is "eight hundred seventeen million, two hundred ninety-four thousand, four hundred forty-nine".