1393656 has 32 divisors (see below), whose sum is σ = 3801600. Its totient is φ = 422240.

The previous prime is 1393649. The next prime is 1393657. The reversal of 1393656 is 6563931.

It is a super-3 number, since 3×1393656³ = 8120598177865333248, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393657) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 2376 + ... + 2903.

It is an arithmetic number, because the mean of its divisors is an integer number (118800).

2^1393656 is an apocalyptic number.

It is an amenable number.

1393656 is an abundant number, since it is smaller than the sum of its proper divisors (2407944).

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

1393656 is a wasteful number, since it uses less digits than its factorization.

1393656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5299 (or 5295 counting only the distinct ones).

The product of its digits is 14580, while the sum is 33.

The square root of 1393656 is about 1180.5320834268. The cubic root of 1393656 is about 111.6996630293.

The spelling of 1393656 in words is "one million, three hundred ninety-three thousand, six hundred fifty-six".