40286443 has 2 divisors, whose sum is σ = 40286444. Its totient is φ = 40286442.

The previous prime is 40286429. The next prime is 40286459. The reversal of 40286443 is 34468204.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40286443 is a prime.

It is not a weakly prime, because it can be changed into another prime (40286483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20143221 + 20143222.

It is an arithmetic number, because the mean of its divisors is an integer number (20143222).

Almost surely, 2^40286443 is an apocalyptic number.

40286443 is a deficient number, since it is larger than the sum of its proper divisors (1).

40286443 is an equidigital number, since it uses as much as digits as its factorization.

40286443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 40286443 is about 6347.1602311585. The cubic root of 40286443 is about 342.8095994674.

The spelling of 40286443 in words is "forty million, two hundred eighty-six thousand, four hundred forty-three".