44564013 has 24 divisors (see below), whose sum is σ = 71894368. Its totient is φ = 27422064.

The previous prime is 44564011. The next prime is 44564017. The reversal of 44564013 is 31046544.

44564013 is a `hidden beast` number, since 4 + 4 + 5 + 640 + 13 = 666.

It is not a de Polignac number, because 44564013 - 2¹ = 44564011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44564011) 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 23 ways as a sum of consecutive naturals, for example, 3895 + ... + 10212.

Almost surely, 2^44564013 is an apocalyptic number.

It is an amenable number.

44564013 is a deficient number, since it is larger than the sum of its proper divisors (27330355).

44564013 is a wasteful number, since it uses less digits than its factorization.

44564013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14135 (or 14123 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 44564013 is about 6675.6282850380. The cubic root of 44564013 is about 354.5368900029.

The spelling of 44564013 in words is "forty-four million, five hundred sixty-four thousand, thirteen".