1249408 has 32 divisors (see below), whose sum is σ = 2558160. Its totient is φ = 607488.

The previous prime is 1249403. The next prime is 1249411. The reversal of 1249408 is 8049421.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1249408² = 3122040700928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1249403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5391 + ... + 5617.

2^1249408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1249408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1279080).

1249408 is an abundant number, since it is smaller than the sum of its proper divisors (1308752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1249408 is an equidigital number, since it uses as much as digits as its factorization.

1249408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1249408 is about 1117.7692069475. The cubic root of 1249408 is about 107.7047261451.

The spelling of 1249408 in words is "one million, two hundred forty-nine thousand, four hundred eight".