1248889 has 4 divisors (see below), whose sum is σ = 1314640. Its totient is φ = 1183140.

The previous prime is 1248881. The next prime is 1248893. The reversal of 1248889 is 9888421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1248889 - 2³ = 1248881 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1248881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32847 + ... + 32884.

It is an arithmetic number, because the mean of its divisors is an integer number (328660).

2^1248889 is an apocalyptic number.

1248889 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1248889 is a deficient number, since it is larger than the sum of its proper divisors (65751).

1248889 is an equidigital number, since it uses as much as digits as its factorization.

1248889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65750.

The product of its digits is 36864, while the sum is 40.

The square root of 1248889 is about 1117.5370239952. The cubic root of 1248889 is about 107.6898106826.

The spelling of 1248889 in words is "one million, two hundred forty-eight thousand, eight hundred eighty-nine".