1393424 has 20 divisors (see below), whose sum is σ = 2739036. Its totient is φ = 686592.

The previous prime is 1393417. The next prime is 1393451. The reversal of 1393424 is 4243931.

It can be written as a sum of positive squares in 2 ways, for example, as 753424 + 640000 = 868^2 + 800^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1393393 and 1393402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 572 + ... + 1764.

2^1393424 is an apocalyptic number.

It is an amenable number.

1393424 is a deficient number, since it is larger than the sum of its proper divisors (1345612).

1393424 is a wasteful number, since it uses less digits than its factorization.

1393424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274 (or 1268 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 1393424 is about 1180.4338185599. The cubic root of 1393424 is about 111.6934645222.

The spelling of 1393424 in words is "one million, three hundred ninety-three thousand, four hundred twenty-four".