449999757 has 18 divisors (see below), whose sum is σ = 673197642. Its totient is φ = 289650144.

The previous prime is 449999747. The next prime is 449999777. The reversal of 449999757 is 757999944.

449999757 is a `hidden beast` number, since 4 + 499 + 9 + 97 + 57 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 139570596 + 310429161 = 11814^2 + 17619^2 .

It is not a de Polignac number, because 449999757 - 2¹⁵ = 449966989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 449999694 and 449999703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449999717) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22158 + ... + 37295.

It is an arithmetic number, because the mean of its divisors is an integer number (37399869).

Almost surely, 2^449999757 is an apocalyptic number.

It is an amenable number.

449999757 is a deficient number, since it is larger than the sum of its proper divisors (223197885).

449999757 is a wasteful number, since it uses less digits than its factorization.

449999757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59517 (or 59485 counting only the distinct ones).

The product of its digits is 25719120, while the sum is 63.

The square root of 449999757 is about 21213.1977080307. The cubic root of 449999757 is about 766.3092944578.

It can be divided in two parts, 4499997 and 57, that added together give a palindrome (4500054).

The spelling of 449999757 in words is "four hundred forty-nine million, nine hundred ninety-nine thousand, seven hundred fifty-seven".