1399206 has 8 divisors (see below), whose sum is σ = 2798424. Its totient is φ = 466400.

The previous prime is 1399201. The next prime is 1399213. The reversal of 1399206 is 6029931.

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

1399206 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399201) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 116595 + ... + 116606.

It is an arithmetic number, because the mean of its divisors is an integer number (349803).

2^1399206 is an apocalyptic number.

1399206 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1399206 is a wasteful number, since it uses less digits than its factorization.

1399206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233206.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 1399206 is about 1182.8803827945. The cubic root of 1399206 is about 111.8477416607.

The spelling of 1399206 in words is "one million, three hundred ninety-nine thousand, two hundred six".