449640753 has 4 divisors (see below), whose sum is σ = 599521008. Its totient is φ = 299760500.

The previous prime is 449640739. The next prime is 449640773. The reversal of 449640753 is 357046944.

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 a cyclic number.

It is not a de Polignac number, because 449640753 - 2⁵ = 449640721 is a prime.

It is a super-3 number, since 3×449640753³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (449640773) 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, 74940123 + ... + 74940128.

It is an arithmetic number, because the mean of its divisors is an integer number (149880252).

Almost surely, 2^449640753 is an apocalyptic number.

It is an amenable number.

449640753 is a deficient number, since it is larger than the sum of its proper divisors (149880255).

449640753 is a wasteful number, since it uses less digits than its factorization.

449640753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149880254.

The product of its (nonzero) digits is 362880, while the sum is 42.

The square root of 449640753 is about 21204.7342119631. The cubic root of 449640753 is about 766.1054563525.

The spelling of 449640753 in words is "four hundred forty-nine million, six hundred forty thousand, seven hundred fifty-three".