1396786 has 4 divisors (see below), whose sum is σ = 2095182. Its totient is φ = 698392.

The previous prime is 1396757. The next prime is 1396789. The reversal of 1396786 is 6876931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1394761 + 2025 = 1181^2 + 45^2 .

It is a super-2 number, since 2×1396786² = 3902022259592, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1396789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349195 + ... + 349198.

2^1396786 is an apocalyptic number.

1396786 is a deficient number, since it is larger than the sum of its proper divisors (698396).

1396786 is an equidigital number, since it uses as much as digits as its factorization.

1396786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698395.

The product of its digits is 54432, while the sum is 40.

The square root of 1396786 is about 1181.8570133481. The cubic root of 1396786 is about 111.7832222757.

The spelling of 1396786 in words is "one million, three hundred ninety-six thousand, seven hundred eighty-six".