40537843 has 4 divisors (see below), whose sum is σ = 42922440. Its totient is φ = 38153248.

The previous prime is 40537841. The next prime is 40537867. The reversal of 40537843 is 34873504.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40537843 - 2¹ = 40537841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40537799 and 40537808.

It is not an unprimeable number, because it can be changed into a prime (40537841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1192273 + ... + 1192306.

It is an arithmetic number, because the mean of its divisors is an integer number (10730610).

Almost surely, 2^40537843 is an apocalyptic number.

40537843 is a deficient number, since it is larger than the sum of its proper divisors (2384597).

40537843 is a wasteful number, since it uses less digits than its factorization.

40537843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2384596.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 40537843 is about 6366.9335633411. The cubic root of 40537843 is about 343.5212010020.

The spelling of 40537843 in words is "forty million, five hundred thirty-seven thousand, eight hundred forty-three".