440893 has 2 divisors, whose sum is σ = 440894. Its totient is φ = 440892.

The previous prime is 440863. The next prime is 440903. The reversal of 440893 is 398044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 363609 + 77284 = 603^2 + 278^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440893 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220446 + 220447.

It is an arithmetic number, because the mean of its divisors is an integer number (220447).

2⁴⁴⁰⁸⁹³ is an apocalyptic number.

It is an amenable number.

440893 is a deficient number, since it is larger than the sum of its proper divisors (1).

440893 is an equidigital number, since it uses as much as digits as its factorization.

440893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 440893 is about 663.9977409600. The cubic root of 440893 is about 76.1104695435.

Subtracting from 440893 its reverse (398044), we obtain a square (42849 = 207²).

The spelling of 440893 in words is "four hundred forty thousand, eight hundred ninety-three".