450558409 has 16 divisors (see below), whose sum is σ = 528632320. Its totient is φ = 376047360.

The previous prime is 450558401. The next prime is 450558439. The reversal of 450558409 is 904855054.

It is a cyclic number.

It is not a de Polignac number, because 450558409 - 2³ = 450558401 is a prime.

It is a super-2 number, since 2×450558409² = 406005759841222562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450558401) 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, 34789 + ... + 45949.

It is an arithmetic number, because the mean of its divisors is an integer number (33039520).

Almost surely, 2^450558409 is an apocalyptic number.

It is an amenable number.

450558409 is a deficient number, since it is larger than the sum of its proper divisors (78073911).

450558409 is a wasteful number, since it uses less digits than its factorization.

450558409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11320.

The product of its (nonzero) digits is 144000, while the sum is 40.

The square root of 450558409 is about 21226.3611813236. The cubic root of 450558409 is about 766.6262747676.

The spelling of 450558409 in words is "four hundred fifty million, five hundred fifty-eight thousand, four hundred nine".