440739 has 12 divisors (see below), whose sum is σ = 685776. Its totient is φ = 271152.

The previous prime is 440731. The next prime is 440753. The reversal of 440739 is 937044.

It is not a de Polignac number, because 440739 - 2³ = 440731 is a prime.

It is a super-2 number, since 2×440739² = 388501732242, which contains 22 as substring.

It is a d-powerful number, because it can be written as 4⁵ + 4⁹ + 7³ + 0 + 3¹¹ + 9² .

440739 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (440731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1767 + ... + 2000.

It is an arithmetic number, because the mean of its divisors is an integer number (57148).

2⁴⁴⁰⁷³⁹ is an apocalyptic number.

440739 is a deficient number, since it is larger than the sum of its proper divisors (245037).

440739 is a wasteful number, since it uses less digits than its factorization.

440739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3786 (or 3783 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 440739 is about 663.8817665820. The cubic root of 440739 is about 76.1016069417.

The spelling of 440739 in words is "four hundred forty thousand, seven hundred thirty-nine".