1393937 has 2 divisors, whose sum is σ = 1393938. Its totient is φ = 1393936.

The previous prime is 1393933. The next prime is 1393939. The reversal of 1393937 is 7393931.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1201216 + 192721 = 1096^2 + 439^2 .

It is an emirp because it is prime and its reverse (7393931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1393937 - 2² = 1393933 is a prime.

Together with 1393939, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1393897 and 1393906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1393933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696968 + 696969.

It is an arithmetic number, because the mean of its divisors is an integer number (696969).

2^1393937 is an apocalyptic number.

It is an amenable number.

1393937 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393937 is an equidigital number, since it uses as much as digits as its factorization.

1393937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15309, while the sum is 35.

The square root of 1393937 is about 1180.6510915592. The cubic root of 1393937 is about 111.7071697828.

The spelling of 1393937 in words is "one million, three hundred ninety-three thousand, nine hundred thirty-seven".