449746830 has 192 divisors, whose sum is σ = 1364912640. Its totient is φ = 105722496.

The previous prime is 449746823. The next prime is 449746831. The reversal of 449746830 is 38647944.

It is a super-2 number, since 2×449746830² = 404544422190097800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449746831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 726261 + ... + 726879.

It is an arithmetic number, because the mean of its divisors is an integer number (7108920).

Almost surely, 2^449746830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 449746830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (682456320).

449746830 is an abundant number, since it is smaller than the sum of its proper divisors (915165810).

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

449746830 is a wasteful number, since it uses less digits than its factorization.

449746830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 449746830 is about 21207.2353219367. The cubic root of 449746830 is about 766.1656968728.

The spelling of 449746830 in words is "four hundred forty-nine million, seven hundred forty-six thousand, eight hundred thirty".