44378661 has 16 divisors (see below), whose sum is σ = 64995840. Its totient is φ = 26809200.

The previous prime is 44378627. The next prime is 44378681. The reversal of 44378661 is 16687344.

It is not a de Polignac number, because 44378661 - 2¹⁰ = 44377637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44378681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15615 + ... + 18236.

It is an arithmetic number, because the mean of its divisors is an integer number (4062240).

Almost surely, 2^44378661 is an apocalyptic number.

It is an amenable number.

44378661 is a deficient number, since it is larger than the sum of its proper divisors (20617179).

44378661 is a wasteful number, since it uses less digits than its factorization.

44378661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33896.

The product of its digits is 96768, while the sum is 39.

The square root of 44378661 is about 6661.7310813331. The cubic root of 44378661 is about 354.0446734135.

The spelling of 44378661 in words is "forty-four million, three hundred seventy-eight thousand, six hundred sixty-one".