1396709 has 12 divisors (see below), whose sum is σ = 1522476. Its totient is φ = 1280448.

The previous prime is 1396697. The next prime is 1396711. The reversal of 1396709 is 9076931.

It can be written as a sum of positive squares in 2 ways, for example, as 902500 + 494209 = 950^2 + 703^2 .

It is not a de Polignac number, because 1396709 - 2⁸ = 1396453 is a prime.

It is a Duffinian number.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19097 + ... + 19169.

It is an arithmetic number, because the mean of its divisors is an integer number (126873).

2^1396709 is an apocalyptic number.

1396709 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1396709 is a deficient number, since it is larger than the sum of its proper divisors (125767).

1396709 is an equidigital number, since it uses as much as digits as its factorization.

1396709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 1396709 is about 1181.8244370464. The cubic root of 1396709 is about 111.7811681633.

The spelling of 1396709 in words is "one million, three hundred ninety-six thousand, seven hundred nine".