449691216 has 80 divisors (see below), whose sum is σ = 1305499776. Its totient is φ = 132346368.

The previous prime is 449691211. The next prime is 449691217. The reversal of 449691216 is 612196944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449691211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1315 + ... + 30018.

Almost surely, 2^449691216 is an apocalyptic number.

449691216 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 449691216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (652749888).

449691216 is an abundant number, since it is smaller than the sum of its proper divisors (855808560).

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

449691216 is a wasteful number, since it uses less digits than its factorization.

449691216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31380 (or 31374 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 449691216 is about 21205.9240779552. The cubic root of 449691216 is about 766.1341151823.

The spelling of 449691216 in words is "four hundred forty-nine million, six hundred ninety-one thousand, two hundred sixteen".