1403408 has 20 divisors (see below), whose sum is σ = 2737920. Its totient is φ = 696864.

The previous prime is 1403407. The next prime is 1403411. The reversal of 1403408 is 8043041.

It is a self number, because there is not a number n which added to its sum of digits gives 1403408.

It is not an unprimeable number, because it can be changed into a prime (1403407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3641 + ... + 4007.

It is an arithmetic number, because the mean of its divisors is an integer number (136896).

2^1403408 is an apocalyptic number.

It is an amenable number.

1403408 is a deficient number, since it is larger than the sum of its proper divisors (1334512).

1403408 is a wasteful number, since it uses less digits than its factorization.

1403408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1403408 is about 1184.6552241053. The cubic root of 1403408 is about 111.9595942683.

Adding to 1403408 its reverse (8043041), we get a palindrome (9446449).

The spelling of 1403408 in words is "one million, four hundred three thousand, four hundred eight".