1290386 has 8 divisors (see below), whose sum is σ = 1960320. Its totient is φ = 636948.

The previous prime is 1290379. The next prime is 1290427. The reversal of 1290386 is 6830921.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3926 + ... + 4241.

It is an arithmetic number, because the mean of its divisors is an integer number (245040).

2^1290386 is an apocalyptic number.

1290386 is a deficient number, since it is larger than the sum of its proper divisors (669934).

1290386 is an equidigital number, since it uses as much as digits as its factorization.

1290386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8248.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1290386 is about 1135.9515834753. The cubic root of 1290386 is about 108.8695800060.

The spelling of 1290386 in words is "one million, two hundred ninety thousand, three hundred eighty-six".