409885489 has 8 divisors (see below), whose sum is σ = 443658600. Its totient is φ = 376432896.

The previous prime is 409885481. The next prime is 409885523. The reversal of 409885489 is 984588904.

It can be written as a sum of positive squares in 4 ways, for example, as 249103089 + 160782400 = 15783^2 + 12680^2 .

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 409885489 - 2³ = 409885481 is a prime.

It is a super-2 number, since 2×409885489² = 336012228185538242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409885481) 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, 77464 + ... + 82585.

It is an arithmetic number, because the mean of its divisors is an integer number (55457325).

Almost surely, 2^409885489 is an apocalyptic number.

It is an amenable number.

409885489 is a deficient number, since it is larger than the sum of its proper divisors (33773111).

409885489 is a wasteful number, since it uses less digits than its factorization.

409885489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160259.

The product of its (nonzero) digits is 3317760, while the sum is 55.

The square root of 409885489 is about 20245.6288862559. The cubic root of 409885489 is about 742.8267153059.

The spelling of 409885489 in words is "four hundred nine million, eight hundred eighty-five thousand, four hundred eighty-nine".