1393438 has 4 divisors (see below), whose sum is σ = 2090160. Its totient is φ = 696718.

The previous prime is 1393417. The next prime is 1393451. The reversal of 1393438 is 8343931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8343931 = 1429 ⋅5839.

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, 348358 + ... + 348361.

It is an arithmetic number, because the mean of its divisors is an integer number (522540).

2^1393438 is an apocalyptic number.

1393438 is a deficient number, since it is larger than the sum of its proper divisors (696722).

1393438 is an equidigital number, since it uses as much as digits as its factorization.

1393438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696721.

The product of its digits is 7776, while the sum is 31.

The square root of 1393438 is about 1180.4397485683. The cubic root of 1393438 is about 111.6938385896.

The spelling of 1393438 in words is "one million, three hundred ninety-three thousand, four hundred thirty-eight".