1440981 has 12 divisors (see below), whose sum is σ = 2153580. Its totient is φ = 927360.

The previous prime is 1440961. The next prime is 1440983. The reversal of 1440981 is 1890441.

It can be written as a sum of positive squares in 2 ways, for example, as 576081 + 864900 = 759^2 + 930^2 .

It is not a de Polignac number, because 1440981 - 2⁵ = 1440949 is a prime.

It is a super-2 number, since 2×1440981² = 4152852484722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2500 + ... + 3021.

It is an arithmetic number, because the mean of its divisors is an integer number (179465).

2^1440981 is an apocalyptic number.

It is an amenable number.

1440981 is a deficient number, since it is larger than the sum of its proper divisors (712599).

1440981 is a wasteful number, since it uses less digits than its factorization.

1440981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556 (or 5553 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1440981 is about 1200.4086804085. The cubic root of 1440981 is about 112.9499608766.

The spelling of 1440981 in words is "one million, four hundred forty thousand, nine hundred eighty-one".