44890560649 has 6 divisors (see below), whose sum is σ = 49342517210. Its totient is φ = 40809600480.

The previous prime is 44890560647. The next prime is 44890560677. The reversal of 44890560649 is 94606509844.

It can be written as a sum of positive squares in only one way, i.e., 43222410000 + 1668150649 = 207900^2 + 40843^2 .

It is not a de Polignac number, because 44890560649 - 2¹ = 44890560647 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 44890560649.

It is not an unprimeable number, because it can be changed into a prime (44890560641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 185498064 + ... + 185498305.

Almost surely, 2^44890560649 is an apocalyptic number.

It is an amenable number.

44890560649 is a deficient number, since it is larger than the sum of its proper divisors (4451956561).

44890560649 is a wasteful number, since it uses less digits than its factorization.

44890560649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370996391 (or 370996380 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 44890560649 in words is "forty-four billion, eight hundred ninety million, five hundred sixty thousand, six hundred forty-nine".