40999959 has 128 divisors (see below), whose sum is σ = 85800960. Its totient is φ = 18662400.

The previous prime is 40999951. The next prime is 40999963. The reversal of 40999959 is 95999904.

It is a happy number.

40999959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40999959 - 2³ = 40999951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40999951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 999979 + ... + 1000019.

It is an arithmetic number, because the mean of its divisors is an integer number (670320).

Almost surely, 2^40999959 is an apocalyptic number.

40999959 is an abundant number, since it is smaller than the sum of its proper divisors (44801001).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40999959 is a wasteful number, since it uses less digits than its factorization.

40999959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 1180980, while the sum is 54.

The square root of 40999959 is about 6403.1210358699. The cubic root of 40999959 is about 344.8216090977.

Subtracting 40999959 from its reverse (95999904), we obtain a palindrome (54999945).

It can be divided in two parts, 40 and 999959, that added together give a palindrome (999999).

The spelling of 40999959 in words is "forty million, nine hundred ninety-nine thousand, nine hundred fifty-nine".