39445544 has 8 divisors (see below), whose sum is σ = 73960410. Its totient is φ = 19722768.

The previous prime is 39445543. The next prime is 39445561. The reversal of 39445544 is 44554493.

It can be written as a sum of positive squares in only one way, i.e., 38912644 + 532900 = 6238^2 + 730^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 39445498 and 39445507.

It is not an unprimeable number, because it can be changed into a prime (39445543) 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 as a sum of consecutive naturals, namely, 2465339 + ... + 2465354.

Almost surely, 2^39445544 is an apocalyptic number.

It is an amenable number.

39445544 is a deficient number, since it is larger than the sum of its proper divisors (34514866).

39445544 is a wasteful number, since it uses less digits than its factorization.

39445544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4930699 (or 4930695 counting only the distinct ones).

The product of its digits is 172800, while the sum is 38.

The square root of 39445544 is about 6280.5687640531. The cubic root of 39445544 is about 340.4076540565.

The spelling of 39445544 in words is "thirty-nine million, four hundred forty-five thousand, five hundred forty-four".