40888989 has 8 divisors (see below), whose sum is σ = 60576320. Its totient is φ = 27259308.

The previous prime is 40888951. The next prime is 40888999. The reversal of 40888989 is 98988804.

It is not a de Polignac number, because 40888989 - 2²³ = 32500381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40888949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757177 + ... + 757230.

It is an arithmetic number, because the mean of its divisors is an integer number (7572040).

Almost surely, 2^40888989 is an apocalyptic number.

It is an amenable number.

40888989 is a deficient number, since it is larger than the sum of its proper divisors (19687331).

40888989 is a wasteful number, since it uses less digits than its factorization.

40888989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514416 (or 1514410 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 54.

The square root of 40888989 is about 6394.4498590575. The cubic root of 40888989 is about 344.5102313199.

The spelling of 40888989 in words is "forty million, eight hundred eighty-eight thousand, nine hundred eighty-nine".