449640759 has 4 divisors (see below), whose sum is σ = 599521016. Its totient is φ = 299760504.

The previous prime is 449640739. The next prime is 449640773. The reversal of 449640759 is 957046944.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 449640759 - 2¹¹ = 449638711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449640739) 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, 74940124 + ... + 74940129.

It is an arithmetic number, because the mean of its divisors is an integer number (149880254).

Almost surely, 2^449640759 is an apocalyptic number.

449640759 is a deficient number, since it is larger than the sum of its proper divisors (149880257).

449640759 is a wasteful number, since it uses less digits than its factorization.

449640759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149880256.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 449640759 is about 21204.7343534410. The cubic root of 449640759 is about 766.1054597601.

The spelling of 449640759 in words is "four hundred forty-nine million, six hundred forty thousand, seven hundred fifty-nine".