1393836 has 24 divisors (see below), whose sum is σ = 3332784. Its totient is φ = 453120.

The previous prime is 1393831. The next prime is 1393837. The reversal of 1393836 is 6383931.

1393836 = 164² + 165² + ... + 204².

It is a junction number, because it is equal to n+sod(n) for n = 1393797 and 1393806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925 + ... + 1908.

It is an arithmetic number, because the mean of its divisors is an integer number (138866).

2^1393836 is an apocalyptic number.

It is an amenable number.

1393836 is an abundant number, since it is smaller than the sum of its proper divisors (1938948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1393836 is a wasteful number, since it uses less digits than its factorization.

1393836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881 (or 2879 counting only the distinct ones).

The product of its digits is 11664, while the sum is 33.

The square root of 1393836 is about 1180.6083177752. The cubic root of 1393836 is about 111.7044717420.

The spelling of 1393836 in words is "one million, three hundred ninety-three thousand, eight hundred thirty-six".