40919965 has 16 divisors (see below), whose sum is σ = 50651568. Its totient is φ = 31712256.

The previous prime is 40919953. The next prime is 40919993. The reversal of 40919965 is 56991904.

40919965 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 8 ways, for example, as 2244004 + 38675961 = 1498^2 + 6219^2 .

It is not a de Polignac number, because 40919965 - 2¹¹ = 40917917 is a prime.

It is a Duffinian number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 68709 + ... + 69301.

It is an arithmetic number, because the mean of its divisors is an integer number (3165723).

Almost surely, 2^40919965 is an apocalyptic number.

It is an amenable number.

40919965 is a deficient number, since it is larger than the sum of its proper divisors (9731603).

40919965 is a wasteful number, since it uses less digits than its factorization.

40919965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 40919965 is about 6396.8715009761. The cubic root of 40919965 is about 344.5972054706.

The spelling of 40919965 in words is "forty million, nine hundred nineteen thousand, nine hundred sixty-five".