1390286 has 8 divisors (see below), whose sum is σ = 2091960. Its totient is φ = 692968.

The previous prime is 1390283. The next prime is 1390297. The reversal of 1390286 is 6820931.

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 (1390283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116 + ... + 1671.

It is an arithmetic number, because the mean of its divisors is an integer number (261495).

2^1390286 is an apocalyptic number.

1390286 is a deficient number, since it is larger than the sum of its proper divisors (701674).

1390286 is a wasteful number, since it uses less digits than its factorization.

1390286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178.

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

The square root of 1390286 is about 1179.1038970337. The cubic root of 1390286 is about 111.6095566984.

The spelling of 1390286 in words is "one million, three hundred ninety thousand, two hundred eighty-six".