40891754 has 8 divisors (see below), whose sum is σ = 61447140. Its totient is φ = 20409376.

The previous prime is 40891729. The next prime is 40891757. The reversal of 40891754 is 45719804.

It can be written as a sum of positive squares in 2 ways, for example, as 40666129 + 225625 = 6377^2 + 475^2 .

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

It is not an unprimeable number, because it can be changed into a prime (40891757) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 16829 + ... + 19104.

Almost surely, 2^40891754 is an apocalyptic number.

40891754 is a deficient number, since it is larger than the sum of its proper divisors (20555386).

40891754 is a wasteful number, since it uses less digits than its factorization.

40891754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36504.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 40891754 is about 6394.6660585210. Note that the first 3 decimals coincide. The cubic root of 40891754 is about 344.5179966486.

The spelling of 40891754 in words is "forty million, eight hundred ninety-one thousand, seven hundred fifty-four".