40889618 has 48 divisors (see below), whose sum is σ = 78944544. Its totient is φ = 15704640.

The previous prime is 40889617. The next prime is 40889621. The reversal of 40889618 is 81698804.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40889617) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89246 + ... + 89702.

It is an arithmetic number, because the mean of its divisors is an integer number (1644678).

Almost surely, 2^40889618 is an apocalyptic number.

40889618 is a deficient number, since it is larger than the sum of its proper divisors (38054926).

40889618 is a wasteful number, since it uses less digits than its factorization.

40889618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 40889618 is about 6394.4990421455. The cubic root of 40889618 is about 344.5119978576.

The spelling of 40889618 in words is "forty million, eight hundred eighty-nine thousand, six hundred eighteen".