1440396 has 24 divisors (see below), whose sum is σ = 3734640. Its totient is φ = 480096.

The previous prime is 1440391. The next prime is 1440403. The reversal of 1440396 is 6930441.

It is a Harshad number since it is a multiple of its sum of digits (27).

1440396 is a modest number, since divided by 396 gives 144 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1440391) 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, 6561 + ... + 6776.

It is an arithmetic number, because the mean of its divisors is an integer number (155610).

2^1440396 is an apocalyptic number.

It is an amenable number.

1440396 is an abundant number, since it is smaller than the sum of its proper divisors (2294244).

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

1440396 is a wasteful number, since it uses less digits than its factorization.

1440396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13350 (or 13342 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1440396 is about 1200.1649886578. The cubic root of 1440396 is about 112.9346739133.

The spelling of 1440396 in words is "one million, four hundred forty thousand, three hundred ninety-six".