449728090 has 32 divisors (see below), whose sum is σ = 940844160. Its totient is φ = 151577664.

The previous prime is 449728079. The next prime is 449728091. The reversal of 449728090 is 90827944.

It is not an unprimeable number, because it can be changed into a prime (449728091) 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, 50317 + ... + 58576.

It is an arithmetic number, because the mean of its divisors is an integer number (29401380).

Almost surely, 2^449728090 is an apocalyptic number.

449728090 is an abundant number, since it is smaller than the sum of its proper divisors (491116070).

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

449728090 is a wasteful number, since it uses less digits than its factorization.

449728090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108966.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 449728090 is about 21206.7934869937. The cubic root of 449728090 is about 766.1550552231.

The spelling of 449728090 in words is "four hundred forty-nine million, seven hundred twenty-eight thousand, ninety".