40881749 has 8 divisors (see below), whose sum is σ = 43764000. Its totient is φ = 38072592.

The previous prime is 40881727. The next prime is 40881751. The reversal of 40881749 is 94718804.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40881749 - 2¹² = 40877653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40881769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17114 + ... + 19355.

It is an arithmetic number, because the mean of its divisors is an integer number (5470500).

Almost surely, 2^40881749 is an apocalyptic number.

It is an amenable number.

40881749 is a deficient number, since it is larger than the sum of its proper divisors (2882251).

40881749 is a wasteful number, since it uses less digits than its factorization.

40881749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36547.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 40881749 is about 6393.8837180543. The cubic root of 40881749 is about 344.4898965765.

The spelling of 40881749 in words is "forty million, eight hundred eighty-one thousand, seven hundred forty-nine".