1393442 has 4 divisors (see below), whose sum is σ = 2090166. Its totient is φ = 696720.

The previous prime is 1393417. The next prime is 1393451. The reversal of 1393442 is 2443931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2443931 = 7 ⋅349133.

It can be written as a sum of positive squares in only one way, i.e., 1371241 + 22201 = 1171^2 + 149^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348359 + ... + 348362.

2^1393442 is an apocalyptic number.

1393442 is a deficient number, since it is larger than the sum of its proper divisors (696724).

1393442 is an equidigital number, since it uses as much as digits as its factorization.

1393442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696723.

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

The square root of 1393442 is about 1180.4414428509. The cubic root of 1393442 is about 111.6939454655.

The spelling of 1393442 in words is "one million, three hundred ninety-three thousand, four hundred forty-two".