40889144 has 16 divisors (see below), whose sum is σ = 78739800. Its totient is φ = 19891872.

The previous prime is 40889141. The next prime is 40889179. The reversal of 40889144 is 44198804.

It is a junction number, because it is equal to n+sod(n) for n = 40889098 and 40889107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40889141) 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, 68774 + ... + 69365.

Almost surely, 2^40889144 is an apocalyptic number.

It is an amenable number.

40889144 is a deficient number, since it is larger than the sum of its proper divisors (37850656).

40889144 is a wasteful number, since it uses less digits than its factorization.

40889144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138182 (or 138178 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 40889144 is about 6394.4619789315. The cubic root of 40889144 is about 344.5106666369.

The spelling of 40889144 in words is "forty million, eight hundred eighty-nine thousand, one hundred forty-four".