1393936 has 10 divisors (see below), whose sum is σ = 2700782. Its totient is φ = 696960.

The previous prime is 1393933. The next prime is 1393937. The reversal of 1393936 is 6393931.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1336336 + 57600 = 1156^2 + 240^2 .

It is not an unprimeable number, because it can be changed into a prime (1393933) by changing a digit.

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 as a sum of consecutive naturals, namely, 43545 + ... + 43576.

2^1393936 is an apocalyptic number.

1393936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1393936 is a deficient number, since it is larger than the sum of its proper divisors (1306846).

1393936 is an equidigital number, since it uses as much as digits as its factorization.

1393936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87129 (or 87123 counting only the distinct ones).

The product of its digits is 13122, while the sum is 34.

The square root of 1393936 is about 1180.6506680640. The cubic root of 1393936 is about 111.7071430702.

The spelling of 1393936 in words is "one million, three hundred ninety-three thousand, nine hundred thirty-six".