913731427449 has 27 divisors (see below), whose sum is σ = 1402113302863. Its totient is φ = 573291091392.

The previous prime is 913731427417. The next prime is 913731427463. The reversal of 913731427449 is 944724137319.

The square root of 913731427449 is 955893.

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

913731427449 is a `hidden beast` number, since 9 + 13 + 7 + 314 + 274 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 711382599225 + 202348828224 = 843435^2 + 449832^2 .

It is not a de Polignac number, because 913731427449 - 2⁵ = 913731427417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 913731427395 and 913731427404.

It is not an unprimeable number, because it can be changed into a prime (913731427249) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 48741172 + ... + 48759914.

Almost surely, 2^913731427449 is an apocalyptic number.

913731427449 is the 955893-rd square number.

913731427449 is the 477947-th centered octagonal number.

It is an amenable number.

913731427449 is a deficient number, since it is larger than the sum of its proper divisors (488381875414).

913731427449 is an frugal number, since it uses more digits than its factorization.

913731427449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37526 (or 18763 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 54.

The spelling of 913731427449 in words is "nine hundred thirteen billion, seven hundred thirty-one million, four hundred twenty-seven thousand, four hundred forty-nine".