440749 has 4 divisors (see below), whose sum is σ = 459936. Its totient is φ = 421564.

The previous prime is 440731. The next prime is 440753. The reversal of 440749 is 947044.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 440749 - 2⁵ = 440717 is a prime.

It is a Duffinian number.

440749 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9559 + ... + 9604.

It is an arithmetic number, because the mean of its divisors is an integer number (114984).

2⁴⁴⁰⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

440749 is a deficient number, since it is larger than the sum of its proper divisors (19187).

440749 is a wasteful number, since it uses less digits than its factorization.

440749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19186.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 440749 is about 663.8892980008. The cubic root of 440749 is about 76.1021824980.

The spelling of 440749 in words is "four hundred forty thousand, seven hundred forty-nine".