40988905 has 8 divisors (see below), whose sum is σ = 49638600. Its totient is φ = 32489856.

The previous prime is 40988891. The next prime is 40988917. The reversal of 40988905 is 50988904.

It is a happy number.

40988905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 16516096 + 24472809 = 4064^2 + 4947^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40988905 - 2⁵ = 40988873 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 37060 + ... + 38149.

It is an arithmetic number, because the mean of its divisors is an integer number (6204825).

Almost surely, 2^40988905 is an apocalyptic number.

It is an amenable number.

40988905 is a deficient number, since it is larger than the sum of its proper divisors (8649695).

40988905 is a wasteful number, since it uses less digits than its factorization.

40988905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75323.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 40988905 is about 6402.2578048685. The cubic root of 40988905 is about 344.7906171913.

Subtracting 40988905 from its reverse (50988904), we obtain a palindrome (9999999).

The spelling of 40988905 in words is "forty million, nine hundred eighty-eight thousand, nine hundred five".