1440745 has 8 divisors (see below), whose sum is σ = 1739016. Its totient is φ = 1145856.

The previous prime is 1440737. The next prime is 1440763. The reversal of 1440745 is 5470441.

It can be written as a sum of positive squares in 4 ways, for example, as 215296 + 1225449 = 464^2 + 1107^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1440745 - 2³ = 1440737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219 + ... + 1711.

It is an arithmetic number, because the mean of its divisors is an integer number (217377).

2^1440745 is an apocalyptic number.

It is an amenable number.

1440745 is a deficient number, since it is larger than the sum of its proper divisors (298271).

1440745 is a wasteful number, since it uses less digits than its factorization.

1440745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 1440745 is about 1200.3103765277. The cubic root of 1440745 is about 112.9437943261.

The spelling of 1440745 in words is "one million, four hundred forty thousand, seven hundred forty-five".