449808965 has 4 divisors (see below), whose sum is σ = 539770764. Its totient is φ = 359847168.

The previous prime is 449808923. The next prime is 449809007. The reversal of 449808965 is 569808944.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (449808923) and next prime (449809007).

It can be written as a sum of positive squares in 2 ways, for example, as 289204036 + 160604929 = 17006^2 + 12673^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449808965 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44980892 + ... + 44980901.

It is an arithmetic number, because the mean of its divisors is an integer number (134942691).

Almost surely, 2^449808965 is an apocalyptic number.

It is an amenable number.

449808965 is a deficient number, since it is larger than the sum of its proper divisors (89961799).

449808965 is an equidigital number, since it uses as much as digits as its factorization.

449808965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89961798.

The product of its (nonzero) digits is 2488320, while the sum is 53.

The square root of 449808965 is about 21208.7002194854. The cubic root of 449808965 is about 766.2009785840.

The spelling of 449808965 in words is "four hundred forty-nine million, eight hundred eight thousand, nine hundred sixty-five".