1396040 has 32 divisors (see below), whose sum is σ = 3327480. Its totient is φ = 525312.

The previous prime is 1396037. The next prime is 1396049. The reversal of 1396040 is 406931.

It can be written as a sum of positive squares in 4 ways, for example, as 1267876 + 128164 = 1126^2 + 358^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1395997 and 1396015.

It is not an unprimeable number, because it can be changed into a prime (1396049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347 + ... + 1706.

2^1396040 is an apocalyptic number.

1396040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1396040 is an abundant number, since it is smaller than the sum of its proper divisors (1931440).

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

1396040 is a wasteful number, since it uses less digits than its factorization.

1396040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081 (or 2077 counting only the distinct ones).

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

The square root of 1396040 is about 1181.5413661823. The cubic root of 1396040 is about 111.7633182164.

The spelling of 1396040 in words is "one million, three hundred ninety-six thousand, forty".