40891743 has 32 divisors (see below), whose sum is σ = 64640000. Its totient is φ = 25474176.

The previous prime is 40891729. The next prime is 40891757. The reversal of 40891743 is 34719804.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40891729) and next prime (40891757).

It is not a de Polignac number, because 40891743 - 2⁹ = 40891231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40891698 and 40891707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40891343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40023 + ... + 41031.

It is an arithmetic number, because the mean of its divisors is an integer number (2020000).

Almost surely, 2^40891743 is an apocalyptic number.

40891743 is a deficient number, since it is larger than the sum of its proper divisors (23748257).

40891743 is a wasteful number, since it uses less digits than its factorization.

40891743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116 (or 1110 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 40891743 is about 6394.6651984291. The cubic root of 40891743 is about 344.5179657565.

It can be divided in two parts, 4089 and 1743, that added together give a cube (5832 = 18³).

The spelling of 40891743 in words is "forty million, eight hundred ninety-one thousand, seven hundred forty-three".