40741981 has 12 divisors (see below), whose sum is σ = 47774208. Its totient is φ = 34641432.

The previous prime is 40741973. The next prime is 40742003. The reversal of 40741981 is 18914704.

It is not a de Polignac number, because 40741981 - 2³ = 40741973 is a prime.

It is a super-2 number, since 2×40741981² = 3319818031608722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40741931) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2950 + ... + 9496.

It is an arithmetic number, because the mean of its divisors is an integer number (3981184).

Almost surely, 2^40741981 is an apocalyptic number.

It is an amenable number.

40741981 is a deficient number, since it is larger than the sum of its proper divisors (7032227).

40741981 is a wasteful number, since it uses less digits than its factorization.

40741981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6688 (or 6681 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 40741981 is about 6382.9445399439. The cubic root of 40741981 is about 344.0968634969.

The spelling of 40741981 in words is "forty million, seven hundred forty-one thousand, nine hundred eighty-one".