40981585 has 8 divisors (see below), whose sum is σ = 49286016. Its totient is φ = 32713200.

The previous prime is 40981583. The next prime is 40981601. The reversal of 40981585 is 58518904.

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

It is not a de Polignac number, because 40981585 - 2¹ = 40981583 is a prime.

It is a super-2 number, since 2×40981585² = 3358980618224450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40981583) by changing a digit.

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, 6441 + ... + 11110.

It is an arithmetic number, because the mean of its divisors is an integer number (6160752).

Almost surely, 2^40981585 is an apocalyptic number.

It is an amenable number.

40981585 is a deficient number, since it is larger than the sum of its proper divisors (8304431).

40981585 is a wasteful number, since it uses less digits than its factorization.

40981585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18023.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 40981585 is about 6401.6861060193. The cubic root of 40981585 is about 344.7700911687.

The spelling of 40981585 in words is "forty million, nine hundred eighty-one thousand, five hundred eighty-five".