9644811949 has 4 divisors (see below), whose sum is σ = 9698693760. Its totient is φ = 9590930140.

The previous prime is 9644811889. The next prime is 9644812013. The reversal of 9644811949 is 9491184469.

9644811949 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9491184469 = 13 ⋅730091113.

It is a cyclic number.

It is not a de Polignac number, because 9644811949 - 2²³ = 9636423341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9644811949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9644811049) 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 3 ways as a sum of consecutive naturals, for example, 26940637 + ... + 26940994.

It is an arithmetic number, because the mean of its divisors is an integer number (2424673440).

Almost surely, 2^9644811949 is an apocalyptic number.

It is an amenable number.

9644811949 is a deficient number, since it is larger than the sum of its proper divisors (53881811).

9644811949 is a wasteful number, since it uses less digits than its factorization.

9644811949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53881810.

The product of its digits is 2239488, while the sum is 55.

The square root of 9644811949 is about 98208.0034874959. The cubic root of 9644811949 is about 2128.6189368483.

The spelling of 9644811949 in words is "nine billion, six hundred forty-four million, eight hundred eleven thousand, nine hundred forty-nine".