449307661 has 8 divisors (see below), whose sum is σ = 491166144. Its totient is φ = 407617920.

The previous prime is 449307653. The next prime is 449307673. The reversal of 449307661 is 166703944.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 449307661 - 2³ = 449307653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449397661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36580 + ... + 47293.

It is an arithmetic number, because the mean of its divisors is an integer number (61395768).

Almost surely, 2^449307661 is an apocalyptic number.

It is an amenable number.

449307661 is a deficient number, since it is larger than the sum of its proper divisors (41858483).

449307661 is a wasteful number, since it uses less digits than its factorization.

449307661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84371.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 449307661 is about 21196.8785673740. The cubic root of 449307661 is about 765.9162337076.

The spelling of 449307661 in words is "four hundred forty-nine million, three hundred seven thousand, six hundred sixty-one".