449367640 has 16 divisors (see below), whose sum is σ = 1011077280. Its totient is φ = 179747040.

The previous prime is 449367617. The next prime is 449367641. The reversal of 449367640 is 46763944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449367641) 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, 5617056 + ... + 5617135.

It is an arithmetic number, because the mean of its divisors is an integer number (63192330).

Almost surely, 2^449367640 is an apocalyptic number.

449367640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

449367640 is an abundant number, since it is smaller than the sum of its proper divisors (561709640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

449367640 is a wasteful number, since it uses less digits than its factorization.

449367640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11234202 (or 11234198 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 43.

The square root of 449367640 is about 21198.2933275299. The cubic root of 449367640 is about 765.9503134335.

The spelling of 449367640 in words is "four hundred forty-nine million, three hundred sixty-seven thousand, six hundred forty".