1001408 has 14 divisors (see below), whose sum is σ = 1987296. Its totient is φ = 500672.

The previous prime is 1001401. The next prime is 1001411. The reversal of 1001408 is 8041001.

It is a happy number.

1001408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1001392 and 1001401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7760 + ... + 7887.

2^1001408 is an apocalyptic number.

It is an amenable number.

1001408 is a deficient number, since it is larger than the sum of its proper divisors (985888).

1001408 is an equidigital number, since it uses as much as digits as its factorization.

1001408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15659 (or 15649 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1001408 is about 1000.7037523663. The cubic root of 1001408 is about 100.0469113232.

Adding to 1001408 its reverse (8041001), we get a palindrome (9042409).

The spelling of 1001408 in words is "one million, one thousand, four hundred eight".