1390856 has 16 divisors (see below), whose sum is σ = 2721600. Its totient is φ = 665104.

The previous prime is 1390847. The next prime is 1390859. The reversal of 1390856 is 6580931.

It is not an unprimeable number, because it can be changed into a prime (1390859) 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, 3596 + ... + 3963.

It is an arithmetic number, because the mean of its divisors is an integer number (170100).

2^1390856 is an apocalyptic number.

It is an amenable number.

1390856 is a deficient number, since it is larger than the sum of its proper divisors (1330744).

1390856 is a wasteful number, since it uses less digits than its factorization.

1390856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7588 (or 7584 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1390856 is about 1179.3455812441. The cubic root of 1390856 is about 111.6248074586.

The spelling of 1390856 in words is "one million, three hundred ninety thousand, eight hundred fifty-six".