1390306 has 8 divisors (see below), whose sum is σ = 2195280. Its totient is φ = 658548.

The previous prime is 1390297. The next prime is 1390309. The reversal of 1390306 is 6030931.

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

It is not an unprimeable number, because it can be changed into a prime (1390309) 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, 18256 + ... + 18331.

It is an arithmetic number, because the mean of its divisors is an integer number (274410).

2^1390306 is an apocalyptic number.

1390306 is a deficient number, since it is larger than the sum of its proper divisors (804974).

1390306 is a wasteful number, since it uses less digits than its factorization.

1390306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36608.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 1390306 is about 1179.1123780200. The cubic root of 1390306 is about 111.6100918834.

The spelling of 1390306 in words is "one million, three hundred ninety thousand, three hundred six".