8293783691449 has 3 divisors (see below), whose sum is σ = 8293786571343. Its totient is φ = 8293780811556.

The previous prime is 8293783691447. The next prime is 8293783691509. The reversal of 8293783691449 is 9441963873928.

The square root of 8293783691449 is 2879893.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 6993882714025 + 1299900977424 = 2644595^2 + 1140132^2 .

It is not a de Polignac number, because 8293783691449 - 2¹ = 8293783691447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8293783691447) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1439947 + ... + 4319839.

It is an arithmetic number, because the mean of its divisors is an integer number (2764595523781).

Almost surely, 2^{8293783691449} is an apocalyptic number.

8293783691449 is the 2879893-rd square number.

8293783691449 is the 1439947-th centered octagonal number.

It is an amenable number.

8293783691449 is a deficient number, since it is larger than the sum of its proper divisors (2879894).

8293783691449 is an frugal number, since it uses more digits than its factorization.

8293783691449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5759786 (or 2879893 counting only the distinct ones).

The product of its digits is 564350976, while the sum is 73.

The spelling of 8293783691449 in words is "eight trillion, two hundred ninety-three billion, seven hundred eighty-three million, six hundred ninety-one thousand, four hundred forty-nine".