1390046 has 8 divisors (see below), whose sum is σ = 2382960. Its totient is φ = 595728.

The previous prime is 1390043. The next prime is 1390069. The reversal of 1390046 is 6400931.

1390046 = 588² + 589² + ... + 591².

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390043) 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 3 ways as a sum of consecutive naturals, for example, 49631 + ... + 49658.

It is an arithmetic number, because the mean of its divisors is an integer number (297870).

2^1390046 is an apocalyptic number.

1390046 is a deficient number, since it is larger than the sum of its proper divisors (992914).

1390046 is an equidigital number, since it uses as much as digits as its factorization.

1390046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99298.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1390046 is about 1179.0021204391. The cubic root of 1390046 is about 111.6031340786.

Adding to 1390046 its reverse (6400931), we get a palindrome (7790977).

The spelling of 1390046 in words is "one million, three hundred ninety thousand, forty-six".