813253449 has 8 divisors (see below), whose sum is σ = 1084557760. Its totient is φ = 542059056.

The previous prime is 813253439. The next prime is 813253457. The reversal of 813253449 is 944352318.

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

It is not a de Polignac number, because 813253449 - 2⁴ = 813253433 is a prime.

It is a super-2 number, since 2×813253449² = 1322762344620791202, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (813253439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8302 + ... + 41175.

It is an arithmetic number, because the mean of its divisors is an integer number (135569720).

Almost surely, 2^813253449 is an apocalyptic number.

It is an amenable number.

813253449 is a deficient number, since it is larger than the sum of its proper divisors (271304311).

813253449 is a wasteful number, since it uses less digits than its factorization.

813253449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54959.

The product of its digits is 103680, while the sum is 39.

The square root of 813253449 is about 28517.5989346929. The cubic root of 813253449 is about 933.4161366871.

The spelling of 813253449 in words is "eight hundred thirteen million, two hundred fifty-three thousand, four hundred forty-nine".