1440623 has 2 divisors, whose sum is σ = 1440624. Its totient is φ = 1440622.

The previous prime is 1440619. The next prime is 1440641. The reversal of 1440623 is 3260441.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1440623 - 2² = 1440619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1440595 and 1440604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720311 + 720312.

It is an arithmetic number, because the mean of its divisors is an integer number (720312).

2^1440623 is an apocalyptic number.

1440623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440623 is an equidigital number, since it uses as much as digits as its factorization.

1440623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1440623 is about 1200.2595552629. The cubic root of 1440623 is about 112.9406062690.

The spelling of 1440623 in words is "one million, four hundred forty thousand, six hundred twenty-three".