449402009 has 16 divisors (see below), whose sum is σ = 548459520. Its totient is φ = 359916480.

The previous prime is 449401993. The next prime is 449402011. The reversal of 449402009 is 900204944.

It is not a de Polignac number, because 449402009 - 2⁴ = 449401993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (449402069) 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, 29414 + ... + 41999.

It is an arithmetic number, because the mean of its divisors is an integer number (34278720).

Almost surely, 2^449402009 is an apocalyptic number.

It is an amenable number.

449402009 is a deficient number, since it is larger than the sum of its proper divisors (99057511).

449402009 is a wasteful number, since it uses less digits than its factorization.

449402009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71480.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 449402009 is about 21199.1039669133. The cubic root of 449402009 is about 765.9698403367.

The spelling of 449402009 in words is "four hundred forty-nine million, four hundred two thousand, nine".