1399716 has 36 divisors (see below), whose sum is σ = 3603600. Its totient is φ = 457968.

The previous prime is 1399709. The next prime is 1399721. The reversal of 1399716 is 6179931.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1795 + ... + 2453.

It is an arithmetic number, because the mean of its divisors is an integer number (100100).

2^1399716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1399716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1801800).

1399716 is an abundant number, since it is smaller than the sum of its proper divisors (2203884).

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

1399716 is a wasteful number, since it uses less digits than its factorization.

1399716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728 (or 723 counting only the distinct ones).

The product of its digits is 10206, while the sum is 36.

The square root of 1399716 is about 1183.0959386288. The cubic root of 1399716 is about 111.8613292285.

The spelling of 1399716 in words is "one million, three hundred ninety-nine thousand, seven hundred sixteen".