40654843 has 4 divisors (see below), whose sum is σ = 40725880. Its totient is φ = 40583808.

The previous prime is 40654841. The next prime is 40654849. The reversal of 40654843 is 34845604.

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 40654843 - 2¹ = 40654841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40654799 and 40654808.

It is not an unprimeable number, because it can be changed into a prime (40654841) 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, 34653 + ... + 35806.

It is an arithmetic number, because the mean of its divisors is an integer number (10181470).

Almost surely, 2^40654843 is an apocalyptic number.

40654843 is a deficient number, since it is larger than the sum of its proper divisors (71037).

40654843 is an equidigital number, since it uses as much as digits as its factorization.

40654843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71036.

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 40654843 is about 6376.1150397401. The cubic root of 40654843 is about 343.8513729448.

The spelling of 40654843 in words is "forty million, six hundred fifty-four thousand, eight hundred forty-three".