40289044 has 18 divisors (see below), whose sum is σ = 74414634. Its totient is φ = 19083600.

The previous prime is 40289027. The next prime is 40289059. The reversal of 40289044 is 44098204.

It can be written as a sum of positive squares in only one way, i.e., 39312900 + 976144 = 6270^2 + 988^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 40288997 and 40289015.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 12507 + ... + 15394.

Almost surely, 2^40289044 is an apocalyptic number.

It is an amenable number.

40289044 is a deficient number, since it is larger than the sum of its proper divisors (34125590).

40289044 is a wasteful number, since it uses less digits than its factorization.

40289044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27943 (or 27922 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 40289044 is about 6347.3651226316. The cubic root of 40289044 is about 342.8169768754.

The spelling of 40289044 in words is "forty million, two hundred eighty-nine thousand, forty-four".