1396787 has 8 divisors (see below), whose sum is σ = 1639776. Its totient is φ = 1164672.

The previous prime is 1396757. The next prime is 1396789. The reversal of 1396787 is 7876931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1396787 - 2⁶ = 1396723 is a prime.

It is a Duffinian 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 in 7 ways as a sum of consecutive naturals, for example, 2438 + ... + 2955.

It is an arithmetic number, because the mean of its divisors is an integer number (204972).

2^1396787 is an apocalyptic number.

1396787 is a deficient number, since it is larger than the sum of its proper divisors (242989).

1396787 is an equidigital number, since it uses as much as digits as its factorization.

1396787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5437.

The product of its digits is 63504, while the sum is 41.

The square root of 1396787 is about 1181.8574364110. The cubic root of 1396787 is about 111.7832489520.

The spelling of 1396787 in words is "one million, three hundred ninety-six thousand, seven hundred eighty-seven".