440649 has 12 divisors (see below), whose sum is σ = 694512. Its totient is φ = 267000.

The previous prime is 440641. The next prime is 440651. The reversal of 440649 is 946044.

440649 = T₁₆₇ + T₁₆₈ + ... + T₁₉₃.

It is not a de Polignac number, because 440649 - 2³ = 440641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (440641) 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, 2127 + ... + 2324.

It is an arithmetic number, because the mean of its divisors is an integer number (57876).

2⁴⁴⁰⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

440649 is a deficient number, since it is larger than the sum of its proper divisors (253863).

440649 is a wasteful number, since it uses less digits than its factorization.

440649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4468 (or 4465 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 440649 is about 663.8139799673. The cubic root of 440649 is about 76.0964265433.

It can be divided in two parts, 440 and 649, that added together give a square (1089 = 33²).

The spelling of 440649 in words is "four hundred forty thousand, six hundred forty-nine".