1248884409 has 16 divisors (see below), whose sum is σ = 1684634112. Its totient is φ = 822885888.

The previous prime is 1248884393. The next prime is 1248884431. The reversal of 1248884409 is 9044888421.

It is a happy number.

It is not a de Polignac number, because 1248884409 - 2⁴ = 1248884393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1248884479) 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, 248647 + ... + 253619.

It is an arithmetic number, because the mean of its divisors is an integer number (105289632).

Almost surely, 2^1248884409 is an apocalyptic number.

It is an amenable number.

1248884409 is a deficient number, since it is larger than the sum of its proper divisors (435749703).

1248884409 is an equidigital number, since it uses as much as digits as its factorization.

1248884409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5936.

The product of its (nonzero) digits is 589824, while the sum is 48.

The square root of 1248884409 is about 35339.5586984331. The cubic root of 1248884409 is about 1076.8967872406.

The spelling of 1248884409 in words is "one billion, two hundred forty-eight million, eight hundred eighty-four thousand, four hundred nine".