827009449 has 16 divisors (see below), whose sum is σ = 957605760. Its totient is φ = 699557760.

The previous prime is 827009399. The next prime is 827009471. The reversal of 827009449 is 944900728.

It is a cyclic number.

It is not a de Polignac number, because 827009449 - 2¹³ = 827001257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (827409449) 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, 455754 + ... + 457564.

It is an arithmetic number, because the mean of its divisors is an integer number (59850360).

Almost surely, 2^827009449 is an apocalyptic number.

827009449 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

827009449 is a deficient number, since it is larger than the sum of its proper divisors (130596311).

827009449 is a wasteful number, since it uses less digits than its factorization.

827009449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 827009449 is about 28757.7719755895. The cubic root of 827009449 is about 938.6495808135.

The spelling of 827009449 in words is "eight hundred twenty-seven million, nine thousand, four hundred forty-nine".