1438408 has 8 divisors (see below), whose sum is σ = 2697030. Its totient is φ = 719200.

The previous prime is 1438399. The next prime is 1438417. The reversal of 1438408 is 8048341.

It is an interprime number because it is at equal distance from previous prime (1438399) and next prime (1438417).

It can be written as a sum of positive squares in only one way, i.e., 736164 + 702244 = 858^2 + 838^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 89893 + ... + 89908.

2^1438408 is an apocalyptic number.

It is an amenable number.

1438408 is a deficient number, since it is larger than the sum of its proper divisors (1258622).

1438408 is a wasteful number, since it uses less digits than its factorization.

1438408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179807 (or 179803 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 1438408 is about 1199.3364832273. The cubic root of 1438408 is about 112.8826934161.

The spelling of 1438408 in words is "one million, four hundred thirty-eight thousand, four hundred eight".