40223837 has 2 divisors, whose sum is σ = 40223838. Its totient is φ = 40223836.

The previous prime is 40223831. The next prime is 40223851. The reversal of 40223837 is 73832204.

40223837 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24810361 + 15413476 = 4981^2 + 3926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40223837 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40223831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20111918 + 20111919.

It is an arithmetic number, because the mean of its divisors is an integer number (20111919).

Almost surely, 2^40223837 is an apocalyptic number.

It is an amenable number.

40223837 is a deficient number, since it is larger than the sum of its proper divisors (1).

40223837 is an equidigital number, since it uses as much as digits as its factorization.

40223837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 40223837 is about 6342.2265017894. The cubic root of 40223837 is about 342.6319295680.

The spelling of 40223837 in words is "forty million, two hundred twenty-three thousand, eight hundred thirty-seven".