409450849 has 8 divisors (see below), whose sum is σ = 419348160. Its totient is φ = 399656400.

The previous prime is 409450841. The next prime is 409450879. The reversal of 409450849 is 948054904.

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 409450849 - 2³ = 409450841 is a prime.

It is a super-3 number, since 3×409450849³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (409450841) 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, 17629 + ... + 33610.

It is an arithmetic number, because the mean of its divisors is an integer number (52418520).

Almost surely, 2^409450849 is an apocalyptic number.

It is an amenable number.

409450849 is a deficient number, since it is larger than the sum of its proper divisors (9897311).

409450849 is a wasteful number, since it uses less digits than its factorization.

409450849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51431.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 409450849 is about 20234.8918702325. The cubic root of 409450849 is about 742.5640595156.

The spelling of 409450849 in words is "four hundred nine million, four hundred fifty thousand, eight hundred forty-nine".