40915905 has 8 divisors (see below), whose sum is σ = 65465472. Its totient is φ = 21821808.

The previous prime is 40915879. The next prime is 40915913. The reversal of 40915905 is 50951904.

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

It is not a de Polignac number, because 40915905 - 2⁸ = 40915649 is a prime.

It is a super-3 number, since 3×40915905³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1363849 + ... + 1363878.

It is an arithmetic number, because the mean of its divisors is an integer number (8183184).

Almost surely, 2^40915905 is an apocalyptic number.

It is an amenable number.

40915905 is a deficient number, since it is larger than the sum of its proper divisors (24549567).

40915905 is a wasteful number, since it uses less digits than its factorization.

40915905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2727735.

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 40915905 is about 6396.5541504782. The cubic root of 40915905 is about 344.5858083369.

The spelling of 40915905 in words is "forty million, nine hundred fifteen thousand, nine hundred five".