1386408 has 32 divisors (see below), whose sum is σ = 3526560. Its totient is φ = 454080.

The previous prime is 1386383. The next prime is 1386419. The reversal of 1386408 is 8046831.

It is a happy number.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 991 + ... + 1937.

It is an arithmetic number, because the mean of its divisors is an integer number (110205).

2^1386408 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 1386408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1763280).

1386408 is an abundant number, since it is smaller than the sum of its proper divisors (2140152).

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

1386408 is a wasteful number, since it uses less digits than its factorization.

1386408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017 (or 1013 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 1386408 is about 1177.4582795157. The cubic root of 1386408 is about 111.5056872028.

The spelling of 1386408 in words is "one million, three hundred eighty-six thousand, four hundred eight".