40881965 has 8 divisors (see below), whose sum is σ = 49194240. Its totient is φ = 32614992.

The previous prime is 40881959. The next prime is 40881983. The reversal of 40881965 is 56918804.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40881965 is a prime.

It is a super-2 number, since 2×40881965² = 3342670124522450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 9305 + ... + 12974.

It is an arithmetic number, because the mean of its divisors is an integer number (6149280).

Almost surely, 2^40881965 is an apocalyptic number.

It is an amenable number.

40881965 is a deficient number, since it is larger than the sum of its proper divisors (8312275).

40881965 is a wasteful number, since it uses less digits than its factorization.

40881965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22651.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 40881965 is about 6393.9006091743. The cubic root of 40881965 is about 344.4905032831.

The spelling of 40881965 in words is "forty million, eight hundred eighty-one thousand, nine hundred sixty-five".