40000444 has 24 divisors (see below), whose sum is σ = 77129136. Its totient is φ = 18000000.

The previous prime is 40000421. The next prime is 40000451. The reversal of 40000444 is 44400004.

It is a hoax number, since the sum of its digits (16) coincides with the sum of the digits of its distinct prime factors.

40000444 is a modest number, since divided by 444 gives 40 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57 + ... + 8944.

It is an arithmetic number, because the mean of its divisors is an integer number (3213714).

Almost surely, 2^40000444 is an apocalyptic number.

40000444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40000444 is a deficient number, since it is larger than the sum of its proper divisors (37128692).

40000444 is a wasteful number, since it uses less digits than its factorization.

40000444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9117 (or 9115 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 40000444 is about 6324.5904215214. The cubic root of 40000444 is about 341.9964547129.

Adding to 40000444 its reverse (44400004), we get a palindrome (84400448).

The spelling of 40000444 in words is "forty million, four hundred forty-four", and thus it is an aban number.