1440969 has 12 divisors (see below), whose sum is σ = 1968624. Its totient is φ = 937464.

The previous prime is 1440961. The next prime is 1440983. The reversal of 1440969 is 9690441.

It is not a de Polignac number, because 1440969 - 2³ = 1440961 is a prime.

It is a super-2 number, since 2×1440969² = 4152783317922, which contains 22 as substring.

1440969 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1440961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13414 + ... + 13520.

It is an arithmetic number, because the mean of its divisors is an integer number (164052).

2^1440969 is an apocalyptic number.

1440969 is the 642-nd nonagonal number.

It is an amenable number.

1440969 is a deficient number, since it is larger than the sum of its proper divisors (527655).

1440969 is an equidigital number, since it uses as much as digits as its factorization.

1440969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1440969 is about 1200.4036821003. The cubic root of 1440969 is about 112.9496473394.

The spelling of 1440969 in words is "one million, four hundred forty thousand, nine hundred sixty-nine".