449999100 has 162 divisors, whose sum is σ = 1467551904. Its totient is φ = 115214400.

The previous prime is 449999063. The next prime is 449999101. The reversal of 449999100 is 1999944.

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 (449999101) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 3543237 + ... + 3543363.

Almost surely, 2^449999100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 449999100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (733775952).

449999100 is an abundant number, since it is smaller than the sum of its proper divisors (1017552804).

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

449999100 is a wasteful number, since it uses less digits than its factorization.

449999100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 449999100 is about 21213.1822223824. The cubic root of 449999100 is about 766.3089215203.

The spelling of 449999100 in words is "four hundred forty-nine million, nine hundred ninety-nine thousand, one hundred".