40444172 has 12 divisors (see below), whose sum is σ = 71096256. Its totient is φ = 20130960.

The previous prime is 40444171. The next prime is 40444177. The reversal of 40444172 is 27144404.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (40444171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21779 + ... + 23562.

It is an arithmetic number, because the mean of its divisors is an integer number (5924688).

Almost surely, 2^40444172 is an apocalyptic number.

It is an amenable number.

40444172 is a deficient number, since it is larger than the sum of its proper divisors (30652084).

40444172 is a wasteful number, since it uses less digits than its factorization.

40444172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45568 (or 45566 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 40444172 is about 6359.5732561234. The cubic root of 40444172 is about 343.2564048798.

Adding to 40444172 its reverse (27144404), we get a palindrome (67588576).

The spelling of 40444172 in words is "forty million, four hundred forty-four thousand, one hundred seventy-two".