1390956 has 48 divisors (see below), whose sum is σ = 3843840. Its totient is φ = 383040.

The previous prime is 1390937. The next prime is 1390967. The reversal of 1390956 is 6590931.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2151 + ... + 2721.

It is an arithmetic number, because the mean of its divisors is an integer number (80080).

2^1390956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1390956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1921920).

1390956 is an abundant number, since it is smaller than the sum of its proper divisors (2452884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1390956 is a wasteful number, since it uses less digits than its factorization.

1390956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614 (or 612 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 33.

The square root of 1390956 is about 1179.3879768761. The cubic root of 1390956 is about 111.6274826009.

It can be divided in two parts, 1390 and 956, that added together give a triangular number (2346 = T₆₈).

The spelling of 1390956 in words is "one million, three hundred ninety thousand, nine hundred fifty-six".