1393849 has 4 divisors (see below), whose sum is σ = 1398564. Its totient is φ = 1389136.

The previous prime is 1393837. The next prime is 1393871. The reversal of 1393849 is 9483931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9483931 = 103 ⋅92077.

It can be written as a sum of positive squares in 2 ways, for example, as 322624 + 1071225 = 568^2 + 1035^2 .

It is a cyclic number.

It is not a de Polignac number, because 1393849 - 2⁵ = 1393817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1393649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1882 + ... + 2515.

It is an arithmetic number, because the mean of its divisors is an integer number (349641).

2^1393849 is an apocalyptic number.

It is an amenable number.

1393849 is a deficient number, since it is larger than the sum of its proper divisors (4715).

1393849 is an equidigital number, since it uses as much as digits as its factorization.

1393849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4714.

The product of its digits is 23328, while the sum is 37.

The square root of 1393849 is about 1180.6138233987. The cubic root of 1393849 is about 111.7048190219.

The spelling of 1393849 in words is "one million, three hundred ninety-three thousand, eight hundred forty-nine".