440613649 has 16 divisors (see below), whose sum is σ = 518023296. Its totient is φ = 366854400.

The previous prime is 440613637. The next prime is 440613659. The reversal of 440613649 is 946316044.

It is a cyclic number.

It is not a de Polignac number, because 440613649 - 2⁷ = 440613521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (440613659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227214 + ... + 229144.

It is an arithmetic number, because the mean of its divisors is an integer number (32376456).

Almost surely, 2^440613649 is an apocalyptic number.

It is an amenable number.

440613649 is a deficient number, since it is larger than the sum of its proper divisors (77409647).

440613649 is a wasteful number, since it uses less digits than its factorization.

440613649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 440613649 is about 20990.7991510566. The cubic root of 440613649 is about 760.9439154737.

The spelling of 440613649 in words is "four hundred forty million, six hundred thirteen thousand, six hundred forty-nine".