1369408 has 14 divisors (see below), whose sum is σ = 2717546. Its totient is φ = 684672.

The previous prime is 1369393. The next prime is 1369411. The reversal of 1369408 is 8049631.

It can be written as a sum of positive squares in only one way, i.e., 1364224 + 5184 = 1168^2 + 72^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1369408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10635 + ... + 10762.

2^1369408 is an apocalyptic number.

It is an amenable number.

1369408 is a deficient number, since it is larger than the sum of its proper divisors (1348138).

1369408 is an equidigital number, since it uses as much as digits as its factorization.

1369408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21409 (or 21399 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1369408 is about 1170.2170738799. The cubic root of 1369408 is about 111.0480542954.

Subtracting from 1369408 its product of nonzero digits (5184), we obtain a square (1364224 = 1168²).

The spelling of 1369408 in words is "one million, three hundred sixty-nine thousand, four hundred eight".