463644649 has 16 divisors (see below), whose sum is σ = 537836544. Its totient is φ = 396158400.

The previous prime is 463644637. The next prime is 463644653. The reversal of 463644649 is 946446364.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 463644649 - 2⁵ = 463644617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 463644599 and 463644608.

It is not an unprimeable number, because it can be changed into a prime (463644659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15742 + ... + 34279.

It is an arithmetic number, because the mean of its divisors is an integer number (33614784).

Almost surely, 2^463644649 is an apocalyptic number.

It is an amenable number.

463644649 is a deficient number, since it is larger than the sum of its proper divisors (74191895).

463644649 is a wasteful number, since it uses less digits than its factorization.

463644649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50088.

The product of its digits is 1492992, while the sum is 46.

The square root of 463644649 is about 21532.4092706785. The cubic root of 463644649 is about 773.9776454850.

The spelling of 463644649 in words is "four hundred sixty-three million, six hundred forty-four thousand, six hundred forty-nine".